Adding Density

svn path=/trunk/KDE/kdeedu/libkdeedu/; revision=587581

diff --git a/libscience/data/elements.xml b/libscience/data/elements.xml
index fb6466cb1958ee105b025de0c9134dd2e118ac7b..1ebad29ea693e435f4678b7de06d5f4ce9fc219a 100644 (file)
--- a/libscience/data/elements.xml
+++ b/libscience/data/elements.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+ggssssggggssssssggsssssssssssssssssgsssssssssssssssssgssssssssssssssssssssssssssssssgsssssssssss<?xml version="1.0" encoding="utf-8"?>
 <list id="chemicalElement" 
       title="properties of the elements"
 
@@ -42,6 +42,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Hydrogen" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="7">1.00794</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">1.007825032</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">0.084</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">13.5984</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="3">0.75420375</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.20</scalar>
@@ -67,6 +68,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Helium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">4.002602</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">4.002603254</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">0.1785</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">24.5874</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">The Greek word for the sun was 'helios'</scalar>
@@ -91,6 +93,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Lithium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">6.941</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">7.01600455</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">0.53</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.3917</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="21">0.618049</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">0.98</scalar>
@@ -116,6 +119,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Beryllium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">9.012182</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">9.0121822</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">1.85</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">9.3227</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.57</scalar>
@@ -141,6 +145,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Boron" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="7">10.811</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">11.0093054</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">2.46</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.2980</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="25">0.279723</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.04</scalar>
@@ -166,6 +171,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Carbon" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="8">12.0107</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">12</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">3.51</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">11.2603</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="20">1.262118</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.55</scalar>
@@ -189,6 +195,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Nitrogen" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">14.0067</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">14.003074</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">1.17</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">14.5341</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="2">-0.07</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">3.04</scalar>
@@ -214,6 +221,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Oxygen" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">15.9994</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">15.99491462</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">1.33</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">13.6181</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="27">1.4611120</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">3.44</scalar>
@@ -239,6 +247,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Fluorine" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="5">18.9984032</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">18.99840322</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">1.58</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">17.4228</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="32">3.4011887</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">3.98</scalar>
@@ -264,6 +273,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Neon" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="6">20.1797</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">19.99244018</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">0.8999</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">21.5645</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Greek 'neo'. meaning 'new'</scalar>
@@ -288,6 +298,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Sodium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">22.989770</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">22.98976928</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">0.97</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.1391</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="25">0.547926</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">0.93</scalar>
@@ -313,6 +324,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Magnesium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="6">24.3050</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">23.9850417</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">1.74</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.6462</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.31</scalar>
@@ -338,6 +350,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Aluminium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">26.981538</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">26.98153863</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">2.7</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.9858</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="5">0.43283</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.61</scalar>
@@ -363,6 +376,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Silicon" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">28.0855</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">27.97692653</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">2.33</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.1517</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="20">1.389521</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.90</scalar>
@@ -388,6 +402,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Phosphorus" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">30.973761</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">30.97376163</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">1.82</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">10.4867</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="3">0.7465</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.19</scalar>
@@ -413,6 +428,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Sulfur" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="5">32.065</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">31.972071</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">2.06</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">10.3600</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="10">2.0771029</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.58</scalar>
@@ -436,6 +452,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Chlorine" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">35.453</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">34.96885268</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">2.95</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">12.9676</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="27">3.612724</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">3.16</scalar>
@@ -461,6 +478,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Argon" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">39.948</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">39.96238312</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">1.66</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">15.7596</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Greek 'aergon' for 'inactive'</scalar>
@@ -485,6 +503,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Potassium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">39.0983</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">38.96370668</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">0.86</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">4.3407</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="12">0.501459</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">0.82</scalar>
@@ -510,6 +529,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Calcium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="4">40.078</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">39.96259098</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">1.54</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.1132</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="10">0.02455</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.00</scalar>
@@ -535,6 +555,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Scandium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="8">44.955910</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">44.9559119</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">2.99</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.5615</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="20">0.188</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.36</scalar>
@@ -560,6 +581,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Titanium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">47.867</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">47.9479463</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">4.51</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.8281</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="9">0.084</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.54</scalar>
@@ -585,6 +607,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Vanadium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">50.9415</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">50.9439595</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">6.09</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.7462</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="12">0.525</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.63</scalar>
@@ -610,6 +633,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Chromium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="6">51.9961</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">51.9405075</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.14</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.7665</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="12">0.67584</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.66</scalar>
@@ -635,6 +659,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Manganese" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="9">54.938049</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">54.9380451</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.44</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.4340</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.55</scalar>
@@ -660,6 +685,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Iron" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">55.845</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">55.9349375</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.874</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.9024</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="3">0.151</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.83</scalar>
@@ -683,6 +709,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Cobalt" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="9">58.933200</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">58.933195</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">8.89</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.8810</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="6">0.6633</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.88</scalar>
@@ -708,6 +735,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Nickel" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">58.6934</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">57.9353429</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">8.91</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.6398</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="12">1.15716</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.91</scalar>
@@ -733,6 +761,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Copper" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">63.546</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">62.9295975</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">8.92</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.7264</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="4">1.23578</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.90</scalar>
@@ -756,6 +785,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Zinc" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="4">65.409</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">63.9291422</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.14</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">9.3942</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.65</scalar>
@@ -781,6 +811,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Gallium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">69.723</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">68.9255736</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">5.91</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.9993</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="4">0.41</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.81</scalar>
@@ -806,6 +837,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Germanium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">72.64</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">73.9211778</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">5.32</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.8994</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="15">1.232712</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.01</scalar>
@@ -831,6 +863,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Arsenic" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">74.92160</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">74.9215965</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">5.72</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">9.7886</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="8">0.814</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.18</scalar>
@@ -854,6 +887,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Selenium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">78.96</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">79.9165213</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">4.82</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">9.7524</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="2">2.02067</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.55</scalar>
@@ -879,6 +913,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Bromine" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">79.904</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">78.9183371</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">3.14</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">11.8138</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="20">3.3635880</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.96</scalar>
@@ -904,6 +939,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Krypton" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">83.798</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">83.911507</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">4.48</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">13.9996</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">3.00</scalar>
@@ -929,6 +965,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Rubidium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">85.4678</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">84.91178974</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">1.53</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">4.1771</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="20">0.485916</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">0.82</scalar>
@@ -954,6 +991,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Strontium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">87.62</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">87.9056121</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">2.63</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.6949</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="6">0.05206</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">0.95</scalar>
@@ -979,6 +1017,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Yttrium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">88.90585</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">88.9058483</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">4.47</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.2173</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="12">0.307</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.22</scalar>
@@ -1004,6 +1043,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Zirconium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">91.224</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">89.9047044</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">6.51</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.6339</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="14">0.426</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.33</scalar>
@@ -1029,6 +1069,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Niobium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">92.90638</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">92.9063781</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">8.58</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.7589</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="25">0.893</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.6</scalar>
@@ -1054,6 +1095,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Molybdenum" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">95.94</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">97.9054082</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">10.28</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.0924</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="2">0.7472</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.16</scalar>
@@ -1079,6 +1121,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Technetium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">98</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">97.907216</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">11.49</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.28</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="20">0.55</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.9</scalar>
@@ -1104,6 +1147,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Ruthenium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">101.07</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">101.9043493</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">12.45</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.3605</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="25">1.04638</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.2</scalar>
@@ -1129,6 +1173,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Rhodium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">102.90550</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">102.905504</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">12.41</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.4589</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="20">1.14289</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.28</scalar>
@@ -1154,6 +1199,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Palladium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">106.42</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">105.903486</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">12.02</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.3369</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="12">0.56214</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.20</scalar>
@@ -1177,6 +1223,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Silver" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">107.8682</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">106.905097</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">10.49</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.5762</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="2">1.30447</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.93</scalar>
@@ -1200,6 +1247,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Cadmium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="8">112.411</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">113.9033585</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">8.64</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.9938</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.69</scalar>
@@ -1225,6 +1273,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Indium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">114.818</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">114.903878</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.31</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.7864</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="9">0.404</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.78</scalar>
@@ -1250,6 +1299,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Tin" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="7">118.710</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">119.9021947</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.29</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.3439</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="15">1.112066</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.96</scalar>
@@ -1273,6 +1323,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Antimony" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">121.760</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">120.9038157</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">6.69</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.6084</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="20">1.047401</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.05</scalar>
@@ -1296,6 +1347,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Tellurium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">127.60</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">129.9062244</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">6.25</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">9.0096</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="7">1.970875</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.1</scalar>
@@ -1321,6 +1373,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Iodine" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">126.90447</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">126.904473</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">4.94</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">10.4513</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="10">3.059038</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.66</scalar>
@@ -1346,6 +1399,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Xenon" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="6">131.293</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">131.9041535</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">4.49</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">12.1298</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.6</scalar>
@@ -1371,6 +1425,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Caesium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">132.90545</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">132.9054519</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">1.9</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">3.8939</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="25">0.471626</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">0.79</scalar>
@@ -1396,6 +1451,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Barium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="7">137.327</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">137.9052472</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">3.65</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.2117</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="6">0.14462</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">0.89</scalar>
@@ -1421,6 +1477,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Lanthanum" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">138.9055</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">138.9063533</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">6.16</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.5769</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="2">0.47</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.10</scalar>
@@ -1446,6 +1503,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Cerium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">140.116</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">139.9054387</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">6.77</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.5387</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.12</scalar>
@@ -1469,6 +1527,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Praseodymium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">140.90765</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">140.9076528</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">6.48</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.473</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.13</scalar>
@@ -1492,6 +1551,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Neodymium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">144.24</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">141.9077233</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.5250</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.14</scalar>
@@ -1515,6 +1575,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Promethium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">145</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">144.912749</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.22</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.582</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after the greek Prometheus. Prometheus stole the fire from the gods and gave it to mankind</scalar>
@@ -1537,6 +1598,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Samarium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">150.36</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">151.9197324</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.54</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.6437</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.17</scalar>
@@ -1560,6 +1622,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Europium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">151.964</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">152.9212303</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">5.25</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.6704</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after Europe</scalar>
@@ -1582,6 +1645,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Gadolinium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">157.25</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">157.9241039</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">7.89</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.1498</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.20</scalar>
@@ -1605,6 +1669,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Terbium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">158.92534</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">158.9253468</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">8.25</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.8638</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after the Swedish town of Ytterby</scalar>
@@ -1627,6 +1692,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Dysprosium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">162.500</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">163.9291748</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">8.56</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.9389</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.22</scalar>
@@ -1650,6 +1716,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Holmium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">164.93032</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">164.9303221</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">8.78</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.0215</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.23</scalar>
@@ -1673,6 +1740,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Erbium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">167.259</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">165.9302931</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">9.05</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.1077</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.24</scalar>
@@ -1696,6 +1764,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Thulium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">168.93421</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">168.9342133</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">9.32</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.1843</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.25</scalar>
@@ -1719,6 +1788,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Ytterbium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">173.04</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">173.9388621</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">9.32</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.2542</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Like Terbium and Gadolinium. this is named after the Swedish town of Ytterby</scalar>
@@ -1741,6 +1811,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Lutetium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">174.967</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">174.9407718</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">9.84</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.4259</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.27</scalar>
@@ -1765,6 +1836,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Hafnium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">178.49</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">179.94655</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">13.31</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.8251</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.3</scalar>
@@ -1790,6 +1862,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Tantalum" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">180.9479</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">180.9479958</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">16.68</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.5496</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="12">0.322</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.5</scalar>
@@ -1815,6 +1888,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Tungsten" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">183.84</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">183.9509312</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">19.26</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.8640</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="8">0.815</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.36</scalar>
@@ -1840,6 +1914,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Rhenium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">186.207</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">186.9557531</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">21.03</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.8335</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="15">0.15</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.9</scalar>
@@ -1865,6 +1940,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Osmium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">190.23</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">191.9614807</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">22.61</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.4382</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="12">1.07780</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.2</scalar>
@@ -1890,6 +1966,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Iridium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">192.217</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">192.9629264</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">22.65</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.9670</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="15">1.56436</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.20</scalar>
@@ -1915,6 +1992,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Platinum" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">195.078</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">194.9647911</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">21.45</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.9588</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="5">2.12510</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.28</scalar>
@@ -1940,6 +2018,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Gold" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">196.96655</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">196.9665687</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">19.32</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">9.2255</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="3">2.30861</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.54</scalar>
@@ -1963,6 +2042,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Mercury" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">200.59</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">201.970643</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">13.55</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">10.4375</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.00</scalar>
@@ -1986,6 +2066,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Thallium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">204.3833</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">204.9744275</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">11.85</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.1082</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="13">0.377</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.62</scalar>
@@ -2011,6 +2092,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Lead" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">207.2</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">207.9766521</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">11.34</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.4167</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="8">0.364</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.33</scalar>
@@ -2034,6 +2116,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Bismuth" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">208.98038</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">208.9803987</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">9.8</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">7.2855</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="25">0.942363</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.02</scalar>
@@ -2057,6 +2140,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Polonium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">209</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">208.9824304</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">9.2</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">8.414</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev" errorValue="3">1.9</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">2.0</scalar>
@@ -2104,6 +2188,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Radon" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">222</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">222.0175777</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/L">9.23</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">10.7485</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronAffinity" units="units:ev">0</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after Radium. It ends with 'on' to make it clear that it is a noble gas</scalar>
@@ -2151,6 +2236,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Radium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">226</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">226.0254098</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">5.5</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.2784</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">0.9</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Latin 'radius' for 'beam', as it is radioactive</scalar>
@@ -2174,6 +2260,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Actinium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">227</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">227.0277521</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">10.07</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.17</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.1</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Greek 'aktis' for 'beam' - actinium is radioactive</scalar>
@@ -2197,6 +2284,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Thorium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="1">232.0381</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">232.0380553</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">11.72</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.3067</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.3</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after the German god of thunder: Thor</scalar>
@@ -2219,6 +2307,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Protactinium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="2">231.03588</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">231.035884</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">15.37</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.89</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.5</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Greek 'protos' for 'ancester'. Protactinium is before Actinium in the periodic table.</scalar>
@@ -2241,6 +2330,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Uranium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass" errorValue="3">238.02891</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">238.0507882</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">18.97</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.1941</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.38</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Greek 'ouranos' for 'heaven'. Named after the planet Uranus</scalar>
@@ -2263,6 +2353,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Neptunium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">237</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">237.0481734</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">20.48</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.2657</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.36</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after the planet Neptune.</scalar>
@@ -2285,6 +2376,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Plutonium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">244</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">244.064204</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">19.74</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.0260</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.28</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after the planet Pluto.</scalar>
@@ -2307,6 +2399,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Americium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">243</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">243.0613811</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">13.67</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.9738</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.3</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after America.</scalar>
@@ -2329,6 +2422,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Curium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">247</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">247.070354</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">13.51</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">5.9914</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.3</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after Marie Curie.</scalar>
@@ -2350,6 +2444,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Berkelium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">247</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">247.070307</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">13.25</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.1979</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.3</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after the town Berkeley where it was discovered.</scalar>
@@ -2371,6 +2466,7 @@
     <label dictRef="bo:name" xml:lang="en" value="Californium" />
     <scalar dataType="xsd:float" dictRef="bo:mass" units="units:atmass">251</scalar>
     <scalar dataType="xsd:float" dictRef="bo:exactMass" units="units:atmass">251.079587</scalar>
+    <scalar dataType="xsd:float" dictRef="bo:density" units="g/cm^3">15.1</scalar>
     <scalar dataType="xsd:float" dictRef="bo:ionization" units="units:ev">6.2817</scalar>
     <scalar dataType="xsd:float" dictRef="bo:electronegativityPauling" units="boUnits:paulingScaleUnit">1.3</scalar>
     <scalar dataType="xsd:string" dictRef="bo:nameOrigin" xml:lang="en">Named after the US-State of California.</scalar>