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aria-hidden="true">H</span><span class="element-item2 alkali nonmetal"><span class="symbol2" aria-hidden="true">H</span><span class="name">Hydrogen</span><span class="number" aria-hidden="true">1</span><span class="weight" aria-hidden="true">1.00794</span></span></a> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <a title="Helium" class="element purple noble-gas nonmetal gas" position="3" isotopes="8" melting="0.95" href="he.html"><span class="symbol" aria-hidden="true">He</span><span class="element-item2 noble-gas nonmetal"><span class="symbol2" aria-hidden="true">He</span><span class="name">Helium</span><span class="number" aria-hidden="true">2</span><span class="weight" aria-hidden="true">4.002602</span></span></a> <a title="Lithium" class="element red alkali metal" position="4" isotopes="11" melting="453.69" href="li.html"><span class="symbol" aria-hidden="true">Li</span><span class="element-item2 alkali metal"><span class="symbol2" aria-hidden="true">Li</span><span class="name">Lithium</span><span class="number" aria-hidden="true">3</span><span class="weight" aria-hidden="true">6.941</span></span></a> <a title="Beryllium" class="element orange alkaline-earth metal right-10 shadow-R" position="5" isotopes="12" melting="1560" href="be.html"><span class="symbol" aria-hidden="true">Be</span><span class="element-item2 alkaline-earth metal"><span class="symbol2" aria-hidden="true">Be</span><span class="name">Beryllium</span><span class="number" aria-hidden="true">4</span><span class="weight" aria-hidden="true">9.012182</span></span></a> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <a title="Boron" class="element blue post-transition nonmetal" position="7" isotopes="16" melting="2349" href="bb.html"><span class="symbol" aria-hidden="true">B</span><span class="element-item2 post-transition metal metal"><span class="symbol2" aria-hidden="true">B</span><span class="name">Boron</span><span class="number" aria-hidden="true">5</span><span class="weight" aria-hidden="true">10.811</span></span></a> <a title="Carbon" class="element blue post-transition nonmetal" position="8" isotopes="16" melting="3800" href="cc.html"><span class="symbol" aria-hidden="true">C</span><span class="element-item2 post-transition metal metal"><span class="symbol2" aria-hidden="true">C</span><span class="name">Carbon</span><span class="number" aria-hidden="true">6</span><span class="weight" aria-hidden="true">12.0107</span></span></a> <a title="Nitrogen" class="element blue post-transition nonmetal gas" position="9" isotopes="16" melting="63.153" href="nitrogen.html"><span class="symbol" aria-hidden="true">N</span><span class="element-item2 post-transition metal metal"><span class="symbol2" aria-hidden="true">N</span><span class="name">Nitrogen</span><span class="number" aria-hidden="true">7</span><span class="weight" aria-hidden="true">14.0067</span></span></a> <a title="Oxygen" class="element dark-blue diatomic nonmetal gas" position="10" isotopes="17" melting="54.36" href="oxygen.html"><span class="symbol" aria-hidden="true">O</span><span class="element-item2 diatomic nonmetal"><span class="symbol2" aria-hidden="true">O</span><span class="name">Oxygen</span><span class="number" aria-hidden="true">8</span><span class="weight" aria-hidden="true">15.9994</span></span></a> <a title="Fluorine" class="element pink halogen nonmetal gas" position="11" isotopes="18" melting="53.53" href="fluorine.html"><span class="symbol" aria-hidden="true">F</span><span class="element-item2 halogen nonmetal"><span class="symbol2" aria-hidden="true">F</span><span class="name">Fluorine</span><span class="number" aria-hidden="true">9</span><span class="weight" aria-hidden="true">18.9984032</span></span></a> <a title="Neon" class="element purple noble-gas nonmetal gas" position="12" isotopes="19" melting="24.56" href="ne.html"><span class="symbol" aria-hidden="true">Ne</span><span class="element-item2 noble-gas nonmetal"><span class="symbol2" aria-hidden="true">Ne</span><span class="name">Neon</span><span class="number" aria-hidden="true">10</span><span class="weight" aria-hidden="true">20.1797</span></span></a> <a title="Sodium" class="element red alkali metal" position="13" isotopes="20" melting="370.87" href="na.html"><span class="symbol" aria-hidden="true">Na</span><span class="element-item2 alkali metal"><span class="symbol2" aria-hidden="true">Na</span><span class="name">Sodium</span><span class="number" aria-hidden="true">11</span><span class="weight" aria-hidden="true">22.98976928</span></span></a> <a title="Magnesium" class="element orange alkaline-earth metal right-10 shadow-R" position="14" isotopes="22" melting="923" href="mg.html"><span class="symbol" aria-hidden="true">Mg</span><span class="element-item2 alkaline-earth metal"><span class="symbol2" aria-hidden="true">Mg</span><span class="name">Magnesium</span><span class="number" aria-hidden="true">12</span><span class="weight" aria-hidden="true">24.305</span></span></a> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <a title="Aluminum" class="element sea-green metalloid" position="16" isotopes="23" melting="933.47" href="al.html"><span class="symbol" aria-hidden="true">Al</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Al</span><span class="name">Aluminum</span><span class="number" aria-hidden="true">13</span><span class="weight" aria-hidden="true">26.9815386</span></span></a> <a title="Silicon" class="element blue post-transition metal" position="17" isotopes="24" melting="1687" href="si.html"><span class="symbol" aria-hidden="true">Si</span><span class="element-item2 post-transition nonmetal"><span class="symbol2" aria-hidden="true">Si</span><span class="name">Silicon</span><span class="number" aria-hidden="true">14</span><span class="weight" aria-hidden="true">28.0855</span></span></a> <a title="Phosphorus" class="element blue post-transition nonmetal" position="18" isotopes="24" melting="317.3" href="p.html"><span class="symbol" aria-hidden="true">P</span><span class="element-item2 post-transition metal metal"><span class="symbol2" aria-hidden="true">P</span><span class="name">Phosphorus</span><span class="number" aria-hidden="true">15</span><span class="weight" aria-hidden="true">30.973762</span></span></a> <a title="Sulfur" class="element dark-blue diatomic nonmetal" position="19" isotopes="24" melting="388.36" href="sulfur.html"><span class="symbol" aria-hidden="true">S</span><span class="element-item2 diatomic nonmetal"><span class="symbol2" aria-hidden="true">S</span><span class="name">Sulfur</span><span class="number" aria-hidden="true">16</span><span class="weight" aria-hidden="true">32.065</span></span></a> <a title="Chlorine" class="element pink halogen nonmetal gas" position="20" isotopes="24" melting="171.6" href="chlorine.html"><span class="symbol" aria-hidden="true">Cl</span><span class="element-item2 halogen nonmetal"><span class="symbol2" aria-hidden="true">Cl</span><span class="name">Chlorine</span><span class="number" aria-hidden="true">17</span><span class="weight" aria-hidden="true">35.453</span></span></a> <a title="Argon" class="element purple noble-gas nonmetal gas" position="21" isotopes="24" melting="83.8" href="ar.html"><span class="symbol" aria-hidden="true">Ar</span><span class="element-item2 noble-gas nonmetal"><span class="symbol2" aria-hidden="true">Ar</span><span class="name">Argon</span><span class="number" aria-hidden="true">18</span><span class="weight" aria-hidden="true">39.948</span></span></a> <a title="Potassium" class="element red alkali metal" position="22" isotopes="25" melting="336.53" href="kk.html"><span class="symbol" aria-hidden="true">K</span><span class="element-item2 alkali metal"><span class="symbol2" aria-hidden="true">K</span><span class="name">Potassium</span><span class="number" aria-hidden="true">19</span><span class="weight" aria-hidden="true">39.0983</span></span></a> <a title="Calcium" class="element orange alkaline-earth metal" position="23" isotopes="25" melting="1115" href="ca.html"><span class="symbol" aria-hidden="true">Ca</span><span class="element-item2 alkaline-earth metal"><span class="symbol2" aria-hidden="true">Ca</span><span class="name">Calcium</span><span class="number" aria-hidden="true">20</span><span class="weight" aria-hidden="true">40.078</span></span></a> <a title="Scandium" class="element transition metal" position="24" isotopes="26" melting="1814" href="sc.html"><span class="symbol" aria-hidden="true">Sc</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Sc</span><span class="name">Scandium</span><span class="number" aria-hidden="true">21</span><span class="weight" aria-hidden="true">44.955912</span></span></a> <a title="Titanium" class="element transition metal" position="25" isotopes="26" melting="1941" href="ti.html"><span class="symbol" aria-hidden="true">Ti</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Ti</span><span class="name">Titanium</span><span class="number" aria-hidden="true">22</span><span class="weight" aria-hidden="true">47.867</span></span></a> <a title="Vanadium" class="element transition metal" position="26" isotopes="27" melting="2183" href="vv.html"><span class="symbol" aria-hidden="true">V</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">V</span><span class="name">Vanadium</span><span class="number" aria-hidden="true">23</span><span class="weight" aria-hidden="true">50.9415</span></span></a> <a title="Chromium" class="element transition metal" position="27" isotopes="27" melting="2180" href="cr.html"><span class="symbol" aria-hidden="true">Cr</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Cr</span><span class="name">Chromium</span><span class="number" aria-hidden="true">24</span><span class="weight" aria-hidden="true">51.9961</span></span></a> <a title="Manganese" class="element transition metal" position="28" isotopes="28" melting="1519" href="mn.html"><span class="symbol" aria-hidden="true">Mn</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Mn</span><span class="name">Manganese</span><span class="number" aria-hidden="true">25</span><span class="weight" aria-hidden="true">54.938045</span></span></a> <a title="Iron" class="element transition metal" position="29" isotopes="30" melting="1811" href="fe.html"><span class="symbol" aria-hidden="true">Fe</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Fe</span><span class="name">Iron</span><span class="number" aria-hidden="true">26</span><span class="weight" aria-hidden="true">55.845</span></span></a> <a title="Cobalt" class="element transition metal" position="30" isotopes="30" melting="1768" href="co.html"><span class="symbol" aria-hidden="true">Co</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Co</span><span class="name">Cobalt</span><span class="number" aria-hidden="true">27</span><span class="weight" aria-hidden="true">58.933195</span></span></a> <a title="Nickel" class="element transition metal" position="31" isotopes="32" melting="1728" href="ni.html"><span class="symbol" aria-hidden="true">Ni</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Ni</span><span class="name">Nickel</span><span class="number" aria-hidden="true">28</span><span class="weight" aria-hidden="true">58.6934</span></span></a> <a title="Copper" class="element transition metal" position="32" isotopes="31" melting="1357.77" href="cu.html"><span class="symbol" aria-hidden="true">Cu</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Cu</span><span class="name">Copper</span><span class="number" aria-hidden="true">29</span><span class="weight" aria-hidden="true">63.546</span></span></a> <a title="Zinc" class="element transition metal" position="33" isotopes="32" melting="692.68" href="zn.html"><span class="symbol" aria-hidden="true">Zn</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Zn</span><span class="name">Zinc</span><span class="number" aria-hidden="true">30</span><span class="weight" aria-hidden="true">65.38</span></span></a> <a title="Gallium" class="element sea-green metalloid" position="34" isotopes="32" melting="302.9146" href="ga.html"><span class="symbol" aria-hidden="true">Ga</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Ga</span><span class="name">Gallium</span><span class="number" aria-hidden="true">31</span><span class="weight" aria-hidden="true">69.723</span></span></a> <a title="Germanium" class="element sea-green metalloid" position="35" isotopes="33" melting="1211.4" href="ge.html"><span class="symbol" aria-hidden="true">Ge</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Ge</span><span class="name">Germanium</span><span class="number" aria-hidden="true">32</span><span class="weight" aria-hidden="true">72.64</span></span></a> <a title="Arsenic" class="element blue post-transition nonmetal" position="36" isotopes="33" melting="1090" href="as.html"><span class="symbol" aria-hidden="true">As</span><span class="element-item2 post-transition metal metal"><span class="symbol2" aria-hidden="true">As</span><span class="name">Arsenic</span><span class="number" aria-hidden="true">33</span><span class="weight" aria-hidden="true">74.9216</span></span></a> <a title="Selenium" class="element dark-blue diatomic nonmetal" position="37" isotopes="32" melting="494" href="se.html"><span class="symbol" aria-hidden="true">Se</span><span class="element-item2 diatomic nonmetal"><span class="symbol2" aria-hidden="true">Se</span><span class="name">Selenium</span><span class="number" aria-hidden="true">34</span><span class="weight" aria-hidden="true">78.96</span></span></a> <a title="Bromine" class="element pink halogen nonmetal" position="38" isotopes="32" melting="265.8" href="bromine.html"><span class="symbol" aria-hidden="true">Br</span><span class="element-item2 halogen nonmetal"><span class="symbol2" aria-hidden="true">Br</span><span class="name">Bromine</span><span class="number" aria-hidden="true">35</span><span class="weight" aria-hidden="true">79.904</span></span></a> <a title="Krypton" class="element purple noble-gas nonmetal gas" position="39" isotopes="33" melting="115.79" href="kr.html"><span class="symbol" aria-hidden="true">Kr</span><span class="element-item2 noble-gas nonmetal"><span class="symbol2" aria-hidden="true">Kr</span><span class="name">Krypton</span><span class="number" aria-hidden="true">36</span><span class="weight" aria-hidden="true">83.798</span></span></a> <a title="Rubidium" class="element red alkali metal" position="40" isotopes="33" melting="312.46" href="rb.htm"><span class="symbol" aria-hidden="true">Rb</span><span class="element-item2 alkali metal"><span class="symbol2" aria-hidden="true">Rb</span><span class="name">Rubidium</span><span class="number" aria-hidden="true">37</span><span class="weight" aria-hidden="true">85.4678</span></span></a> <a title="Strontium" class="element orange alkaline-earth metal" position="41" isotopes="35" melting="1050" href="sr.html"><span class="symbol" aria-hidden="true">Sr</span><span class="element-item2 alkaline-earth metal"><span class="symbol2" aria-hidden="true">Sr</span><span class="name">Strontium</span><span class="number" aria-hidden="true">38</span><span class="weight" aria-hidden="true">87.62</span></span></a> <a title="Yttrium" class="element transition metal" position="42" isotopes="34" melting="1799" href="yy.html"><span class="symbol" aria-hidden="true">Y</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Y</span><span class="name">Yttrium</span><span class="number" aria-hidden="true">39</span><span class="weight" aria-hidden="true">88.90585</span></span></a> <a title="Zirconium" class="element transition metal" position="43" isotopes="35" melting="2128" href="zr.html"><span class="symbol" aria-hidden="true">Zr</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Zr</span><span class="name">Zirconium</span><span class="number" aria-hidden="true">40</span><span class="weight" aria-hidden="true">91.224</span></span></a> <a title="Niobium" class="element transition metal" position="44" isotopes="35" melting="2750" href="nb.html"><span class="symbol" aria-hidden="true">Nb</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Nb</span><span class="name">Niobium</span><span class="number" aria-hidden="true">41</span><span class="weight" aria-hidden="true">92.90638</span></span></a> <a title="Molybdenum" class="element transition metal" position="45" isotopes="35" melting="2896" href="mo.html"><span class="symbol" aria-hidden="true">Mo</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Mo</span><span class="name">Molybdenum</span><span class="number" aria-hidden="true">42</span><span class="weight" aria-hidden="true">95.96</span></span></a> <a title="Technetium" class="element transition metal radioactive" position="46" isotopes="36" melting="2430" href="tc.html"><span class="symbol" aria-hidden="true">Tc</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Tc</span><span class="name">Technetium</span><span class="number" aria-hidden="true">43</span><span class="weight" aria-hidden="true">(98</span></span></a> <a title="Ruthenium" class="element transition metal pt-group" position="47" isotopes="38" melting="2607" href="ru.html"><span class="symbol" aria-hidden="true">Ru</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Ru</span><span class="name">Ruthenium</span><span class="number" aria-hidden="true">44</span><span class="weight" aria-hidden="true">101.07</span></span></a> <a title="Rhodium" class="element transition metal pt-group" position="48" isotopes="38" melting="2237" href="rh.html"><span class="symbol" aria-hidden="true">Rh</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Rh</span><span class="name">Rhodium</span><span class="number" aria-hidden="true">45</span><span class="weight" aria-hidden="true">102.9055</span></span></a> <a title="Palladium" class="element transition metal pt-group" position="49" isotopes="38" melting="1828.05" href="pd.html"><span class="symbol" aria-hidden="true">Pd</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Pd</span><span class="name">Palladium</span><span class="number" aria-hidden="true">46</span><span class="weight" aria-hidden="true">106.42</span></span></a> <a title="Silver" class="element transition metal" position="50" isotopes="38" melting="1234.93" href="ag.html"><span class="symbol" aria-hidden="true">Ag</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Ag</span><span class="name">Silver</span><span class="number" aria-hidden="true">47</span><span class="weight" aria-hidden="true">107.8682</span></span></a> <a title="Cadmium" class="element transition metal" position="51" isotopes="39" melting="594.22" href="cd.html"><span class="symbol" aria-hidden="true">Cd</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Cd</span><span class="name">Cadmium</span><span class="number" aria-hidden="true">48</span><span class="weight" aria-hidden="true">112.411</span></span></a> <a title="Indium" class="element sea-green metalloid" position="52" isotopes="39" melting="429.7485" href="in.html"><span class="symbol" aria-hidden="true">In</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">In</span><span class="name">Indium</span><span class="number" aria-hidden="true">49</span><span class="weight" aria-hidden="true">114.818</span></span></a> <a title="Tin" class="element sea-green metalloid" position="53" isotopes="40" melting="505.08" href="sn.html"><span class="symbol" aria-hidden="true">Sn</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Sn</span><span class="name">Tin</span><span class="number" aria-hidden="true">50</span><span class="weight" aria-hidden="true">118.71</span></span></a> <a title="Antimony" class="element sea-green metalloid" position="54" isotopes="38" melting="903.78" href="sb.html"><span class="symbol" aria-hidden="true">Sb</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Sb</span><span class="name">Antimony</span><span class="number" aria-hidden="true">51</span><span class="weight" aria-hidden="true">121.76</span></span></a> <a title="Tellurium" class="element dark-blue diatomic nonmetal" position="55" isotopes="39" melting="722.66" href="tellurium.html"><span class="symbol" aria-hidden="true">Te</span><span class="element-item2 diatomic nonmetal"><span class="symbol2" aria-hidden="true">Te</span><span class="name">Tellurium</span><span class="number" aria-hidden="true">52</span><span class="weight" aria-hidden="true">127.6</span></span></a> <a title="Iodine" class="element pink halogen nonmetal" position="56" isotopes="39" melting="386.85" href="ii.htm"><span class="symbol" aria-hidden="true">I</span><span class="element-item2 halogen nonmetal"><span class="symbol2" aria-hidden="true">I</span><span class="name">Iodine</span><span class="number" aria-hidden="true">53</span><span class="weight" aria-hidden="true">126.90447</span></span></a> <a title="Xenon" class="element purple noble-gas nonmetal gas" position="57" isotopes="40" melting="161.4" href="xe.html"><span class="symbol" aria-hidden="true">Xe</span><span class="element-item2 noble-gas nonmetal"><span class="symbol2" aria-hidden="true">Xe</span><span class="name">Xenon</span><span class="number" aria-hidden="true">54</span><span class="weight" aria-hidden="true">131.293</span></span></a> <a title="Cesium" class="element red alkali metal" position="58" isotopes="40" melting="301.59" href="cs.html"><span class="symbol" aria-hidden="true">Cs</span><span class="element-item2 alkali metal"><span class="symbol2" aria-hidden="true">Cs</span><span class="name">Cesium</span><span class="number" aria-hidden="true">55</span><span class="weight" aria-hidden="true">132.9054</span></span></a> <a title="Barium" class="element orange alkaline-earth metal" position="59" isotopes="40" melting="1000" href="ba.html"><span class="symbol" aria-hidden="true">Ba</span><span class="element-item2 alkaline-earth metal"><span class="symbol2" aria-hidden="true">Ba</span><span class="name">Barium</span><span class="number" aria-hidden="true">56</span><span class="weight" aria-hidden="true">137.327</span></span></a> <a title="Lanthanum" class="element REAc lanthanoid metal inner-transition" position="60" isotopes="40" melting="1193" href="la.html"><span class="symbol" aria-hidden="true">La</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">La</span><span class="name">Lanthanum</span><span class="number" aria-hidden="true">57</span><span class="weight" aria-hidden="true">138.90547</span></span></a> <a title="Hafnium" class="element transition metal" position="61" isotopes="37" melting="2506" href="hf.html"><span class="symbol" aria-hidden="true">Hf</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Hf</span><span class="name">Hafnium</span><span class="number" aria-hidden="true">72</span><span class="weight" aria-hidden="true">178.48</span></span></a> <a title="Tantalum" class="element transition metal" position="62" isotopes="38" melting="3290" href="ta.html"><span class="symbol" aria-hidden="true">Ta</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Ta</span><span class="name">Tantalum</span><span class="number" aria-hidden="true">73</span><span class="weight" aria-hidden="true">180.9488</span></span></a> <a title="Tungsten" class="element transition metal" position="63" isotopes="38" melting="3695" href="tungsten-w-element-information.html"><span class="symbol" aria-hidden="true">W</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">W</span><span class="name">Tungsten</span><span class="number" aria-hidden="true">74</span><span class="weight" aria-hidden="true">183.84</span></span></a> <a title="Rhenium" class="element transition metal" position="64" isotopes="40" melting="3459" href="re.html"><span class="symbol" aria-hidden="true">Re</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Re</span><span class="name">Rhenium</span><span class="number" aria-hidden="true">75</span><span class="weight" aria-hidden="true">186.207</span></span></a> <a title="Osmium" class="element transition metal pt-group" position="65" isotopes="42" melting="3306" href="os.html"><span class="symbol" aria-hidden="true">Os</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Os</span><span class="name">Osmium</span><span class="number" aria-hidden="true">76</span><span class="weight" aria-hidden="true">190.23</span></span></a> <a title="Iridium" class="element transition metal pt-group" position="66" isotopes="41" melting="2739" href="ir.html"><span class="symbol" aria-hidden="true">Ir</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Ir</span><span class="name">Iridium</span><span class="number" aria-hidden="true">77</span><span class="weight" aria-hidden="true">192.217</span></span></a> <a title="Platinum" class="element transition metal pt-group" position="67" isotopes="41" melting="2041.4" href="pt.htm"><span class="symbol" aria-hidden="true">Pt</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Pt</span><span class="name">Platinum</span><span class="number" aria-hidden="true">78</span><span class="weight" aria-hidden="true">195.084</span></span></a> <a title="Gold" class="element transition metal" position="68" isotopes="42" melting="1337.33" href="au.htm"><span class="symbol" aria-hidden="true">Au</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Au</span><span class="name">Gold</span><span class="number" aria-hidden="true">79</span><span class="weight" aria-hidden="true">196.966569</span></span></a> <a title="Mercury" class="element transition metal" position="69" isotopes="46" melting="234.32" href="hg.html"><span class="symbol" aria-hidden="true">Hg</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Hg</span><span class="name">Mercury</span><span class="number" aria-hidden="true">80</span><span class="weight" aria-hidden="true">200.59</span></span></a> <a title="Thallium" class="element sea-green metalloid" position="70" isotopes="43" melting="577" href="tl.html"><span class="symbol" aria-hidden="true">Tl</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Tl</span><span class="name">Thallium</span><span class="number" aria-hidden="true">81</span><span class="weight" aria-hidden="true">204.3833</span></span></a> <a title="Lead" class="element sea-green metalloid" position="71" isotopes="43" melting="600.61" href="pb.html"><span class="symbol" aria-hidden="true">Pb</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Pb</span><span class="name">Lead</span><span class="number" aria-hidden="true">82</span><span class="weight" aria-hidden="true">207.2</span></span></a> <a title="Bismuth" class="element sea-green metalloid" position="72" isotopes="41" melting="544.7" href="bi.html"><span class="symbol" aria-hidden="true">Bi</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Bi</span><span class="name">Bismuth</span><span class="number" aria-hidden="true">83</span><span class="weight" aria-hidden="true">208.9804</span></span></a> <a title="Polonium" class="element sea-green metalloid radioactive" position="73" isotopes="42" melting="527" href="po.html"><span class="symbol" aria-hidden="true">Po</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Po</span><span class="name">Polonium</span><span class="number" aria-hidden="true">84</span><span class="weight" aria-hidden="true">209</span></span></a> <a title="Astatine" class="element pink halogen nonmetal radioactive" position="74" isotopes="39" melting="575" href="at.html"><span class="symbol" aria-hidden="true">At</span><span class="element-item2 halogen nonmetal"><span class="symbol2" aria-hidden="true">At</span><span class="name">Astatine</span><span class="number" aria-hidden="true">85</span><span class="weight" aria-hidden="true">210</span></span></a> <a title="Radon" class="element purple noble-gas nonmetal radioactive gas" position="75" isotopes="39" melting="202" href="rn.html"><span class="symbol" aria-hidden="true">Rn</span><span class="element-item2 noble-gas nonmetal"><span class="symbol2" aria-hidden="true">Rn</span><span class="name">Radon</span><span class="number" aria-hidden="true">86</span><span class="weight" aria-hidden="true">222</span></span></a> <a title="Francium" class="element red alkali metal radioactive bottom-row" position="76" isotopes="35" melting="300" href="francium.html"><span class="symbol" aria-hidden="true">Fr</span><span class="element-item2 alkali metal"><span class="symbol2" aria-hidden="true">Fr</span><span class="name">Francium</span><span class="number" aria-hidden="true">87</span><span class="weight" aria-hidden="true">223</span></span></a> <a title="Radium" class="element orange alkaline-earth metal radioactive bottom-row" position="77" isotopes="35" melting="973" href="radium.html"><span class="symbol" aria-hidden="true">Ra</span><span class="element-item2 alkaline-earth metal"><span class="symbol2" aria-hidden="true">Ra</span><span class="name">Radium</span><span class="number" aria-hidden="true">88</span><span class="weight" aria-hidden="true">226</span></span></a> <a title="Actinium" class="element REAc actinoid metal inner-transition radioactive bottom-row" position="78" isotopes="32" melting="1323" href="actinium.html"><span class="symbol" aria-hidden="true">Ac</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Ac</span><span class="name">Actinium</span><span class="number" aria-hidden="true">89</span><span class="weight" aria-hidden="true">227</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="79" isotopes="16" href="rutherfordium.html"><span class="symbol" aria-hidden="true">Rf</span><span class="element-item2 transition metal"><span class="symbol2 short9">Rf</span><span class="name">Rutherfordium</span><span class="number" aria-hidden="true">104</span><span class="weight" aria-hidden="true">267</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="80" isotopes="16" href="dubnium.html"><span class="symbol" aria-hidden="true">Db</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Db</span><span class="name">Dubnium</span><span class="number" aria-hidden="true">105</span><span class="weight" aria-hidden="true">268</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="81" isotopes="16" href="seaborgium.html"><span class="symbol" aria-hidden="true">Sg</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Sg</span><span class="name">Seaborgium</span><span class="number" aria-hidden="true">106</span><span class="weight" aria-hidden="true">271</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="82" isotopes="16" href="bohrium.html"><span class="symbol" aria-hidden="true">Bh</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Bh</span><span class="name">Bohrium</span><span class="number" aria-hidden="true">107</span><span class="weight" aria-hidden="true">272</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="83" isotopes="15" href="hassium.html"><span class="symbol" aria-hidden="true">Hs</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Hs</span><span class="name">Hassium</span><span class="number" aria-hidden="true">108</span><span class="weight" aria-hidden="true">270</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="84" isotopes="15" href="meitnerium.html"><span class="symbol" aria-hidden="true">Mt</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Mt</span><span class="name">Meitnerium</span><span class="number" aria-hidden="true">109</span><span class="weight" aria-hidden="true">276</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="85" isotopes="15" href="darmstadtium.html"><span class="symbol" aria-hidden="true">Ds</span><span class="element-item2 transition metal"><span class="symbol2 short9">Ds</span><span class="name">Darmstadtium</span><span class="number" aria-hidden="true">110</span><span class="weight" aria-hidden="true">281</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="86" isotopes="12" href="roentgenium.html"><span class="symbol" aria-hidden="true">Rg</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Rg</span><span class="name">Roentgenium</span><span class="number" aria-hidden="true">111</span><span class="weight" aria-hidden="true">280</span></span></a> <a title="click for products" class="element transition metal radioactive nomelt bottom-row" melting="8000" position="87" isotopes="10" href="copernicium.html"><span class="symbol" aria-hidden="true">Cn</span><span class="element-item2 transition metal"><span class="symbol2" aria-hidden="true">Cn</span><span class="name">Copernicium</span><span class="number" aria-hidden="true">112</span><span class="weight" aria-hidden="true">285</span></span></a> <a title="click for products" class="element sea-green metalloid radioactive nomelt bottom-row" melting="8000" position="88" isotopes="10" href="nihonium.html"><span class="symbol" aria-hidden="true">Nh</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Nh</span><span class="name">Nihonium</span><span class="number" aria-hidden="true">113</span><span class="weight" aria-hidden="true">284</span></span></a> <a title="click for products" class="element sea-green metalloid radioactive nomelt bottom-row" melting="8000" position="89" isotopes="5" href="flerovium.html"><span class="symbol" aria-hidden="true">Fl</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Fl</span><span class="name">Flerovium</span><span class="number" aria-hidden="true">114</span><span class="weight" aria-hidden="true">289</span></span></a> <a title="click for products" class="element sea-green metalloid radioactive nomelt bottom-row" melting="8000" position="90" isotopes="5" href="moscovium.html"><span class="symbol" aria-hidden="true">Mc</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Mc</span><span class="name">Moscovium</span><span class="number" aria-hidden="true">115</span><span class="weight" aria-hidden="true">288</span></span></a> <a title="click for products" class="element sea-green metalloid radioactive nomelt bottom-row" melting="8000" position="91" isotopes="5" href="livermorium.html"><span class="symbol" aria-hidden="true">Lv</span><span class="element-item2 metalloid"><span class="symbol2" aria-hidden="true">Lv</span><span class="name">Livermorium</span><span class="number" aria-hidden="true">116</span><span class="weight" aria-hidden="true">293</span></span></a> <a title="click for products" class="element pink halogen nonmetal radioactive nomelt bottom-row" melting="8000" position="92" isotopes="4" href="tennessine.html"><span class="symbol" aria-hidden="true">Ts</span><span class="element-item2 halogen nonmetal"><span class="symbol2" aria-hidden="true">Ts</span><span class="name">Tennessine</span><span class="number" aria-hidden="true">117</span><span class="weight" aria-hidden="true">294</span></span></a> <a title="click for products" class="element purple noble-gas nonmetal radioactive nomelt bottom-row" melting="8000" position="93" isotopes="3" href="oganesson.html"><span class="symbol" aria-hidden="true">Og</span><span class="element-item2 noble-gas nonmetal"><span class="symbol2" aria-hidden="true">Og</span><span class="name">Oganesson</span><span class="number" aria-hidden="true">118</span><span class="weight" aria-hidden="true">294</span></span></a> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <a title="Cerium" class="element REAc lanthanoid top-margin metal inner-transition left-margin" position="96" isotopes="39" melting="1100" href="ce.html"><span class="symbol" aria-hidden="true">Ce</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Ce</span><span class="name">Cerium</span><span class="number" aria-hidden="true">58</span><span class="weight" aria-hidden="true">140.116</span></span></a> <a title="click for products" class="element REAc lanthanoid top-margin metal inner-transition" position="97" isotopes="39" melting="1208" href="pr.html"><span class="symbol" aria-hidden="true">Pr</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2 short9">Pr</span><span class="name">Praseodymium</span><span class="number" aria-hidden="true">59</span><span class="weight" aria-hidden="true">140.90765</span></span></a> <a title="Neodymium" class="element REAc lanthanoid top-margin metal inner-transition" position="98" isotopes="38" melting="1297" href="nd.html"><span class="symbol" aria-hidden="true">Nd</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Nd</span><span class="name">Neodymium</span><span class="number" aria-hidden="true">60</span><span class="weight" aria-hidden="true">144.242</span></span></a> <a title="Promethium" class="element REAc lanthanoid top-margin metal inner-transition" position="99" isotopes="38" melting="1315" href="pm.html"><span class="symbol" aria-hidden="true">Pm</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Pm</span><span class="name">Promethium</span><span class="number" aria-hidden="true">61</span><span class="weight" aria-hidden="true">145</span></span></a> <a title="Samarium" class="element REAc lanthanoid top-margin metal inner-transition" position="100" isotopes="38" melting="1345" href="sm.html"><span class="symbol" aria-hidden="true">Sm</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Sm</span><span class="name">Samarium</span><span class="number" aria-hidden="true">62</span><span class="weight" aria-hidden="true">150.36</span></span></a> <a title="Europium" class="element REAc lanthanoid top-margin top-margin metal inner-transition" position="101" isotopes="38" melting="1099" href="eu.html"><span class="symbol" aria-hidden="true">Eu</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Eu</span><span class="name">Europium</span><span class="number" aria-hidden="true">63</span><span class="weight" aria-hidden="true">151.964</span></span></a> <a title="Gadolinium" class="element REAc lanthanoid top-margin metal inner-transition" position="102" isotopes="37" melting="1585" href="gd.html"><span class="symbol" aria-hidden="true">Gd</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Gd</span><span class="name">Gadolinium</span><span class="number" aria-hidden="true">64</span><span class="weight" aria-hidden="true">157.25</span></span></a> <a title="Terbium" class="element REAc lanthanoid top-margin metal inner-transition" position="103" isotopes="37" melting="1629" href="tb.html"><span class="symbol" aria-hidden="true">Tb</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Tb</span><span class="name">Terbium</span><span class="number" aria-hidden="true">65</span><span class="weight" aria-hidden="true">158.92535</span></span></a> <a title="Dysprosium" class="element REAc lanthanoid top-margin metal inner-transition" position="104" isotopes="36" melting="1680" href="dy.html"><span class="symbol" aria-hidden="true">Dy</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Dy</span><span class="name">Dysprosium</span><span class="number" aria-hidden="true">66</span><span class="weight" aria-hidden="true">162.5</span></span></a> <a title="Holmium" class="element REAc lanthanoid top-margin metal inner-transition" position="105" isotopes="36" melting="1734" href="ho.html"><span class="symbol" aria-hidden="true">Ho</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Ho</span><span class="name">Holmium</span><span class="number" aria-hidden="true">67</span><span class="weight" aria-hidden="true">164.93032</span></span></a> <a title="Erbium" class="element REAc lanthanoid top-margin metal inner-transition" position="106" isotopes="36" melting="1802" href="er.html"><span class="symbol" aria-hidden="true">Er</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Er</span><span class="name">Erbium</span><span class="number" aria-hidden="true">68</span><span class="weight" aria-hidden="true">167.259</span></span></a> <a title="Thulium" class="element REAc lanthanoid top-margin metal inner-transition" position="107" isotopes="36" melting="1818" href="tm.html"><span class="symbol" aria-hidden="true">Tm</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Tm</span><span class="name">Thulium</span><span class="number" aria-hidden="true">69</span><span class="weight" aria-hidden="true">168.93421</span></span></a> <a title="Ytterbium" class="element REAc lanthanoid top-margin metal inner-transition" position="108" isotopes="34" melting="1097" href="yb.html"><span class="symbol" aria-hidden="true">Yb</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Yb</span><span class="name">Ytterbium</span><span class="number" aria-hidden="true">70</span><span class="weight" aria-hidden="true">173.054</span></span></a> <a title="Lutetium" class="element REAc lanthanoid top-margin metal inner-transition right-margin shadow-R" position="109" isotopes="36" melting="1925" href="lu.html"><span class="symbol" aria-hidden="true">Lu</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Lu</span><span class="name">Lutetium</span><span class="number" aria-hidden="true">71</span><span class="weight" aria-hidden="true">174.9668</span></span></a> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <div class="element transparent"> </div> <a title="Thorium" class="element REAc actinoid bottom-row metal inner-transition radioactive left-margin" position="112" isotopes="32" melting="2115" href="th.html"><span class="symbol" aria-hidden="true">Th</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Th</span><span class="name">Thorium</span><span class="number" aria-hidden="true">90</span><span class="weight" aria-hidden="true">232.03806</span></span></a> <a title="Protactinium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="113" isotopes="30" melting="1841" href="pa.html"><span class="symbol" aria-hidden="true">Pa</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Pa</span><span class="name">Protactinium</span><span class="number" aria-hidden="true">91</span><span class="weight" aria-hidden="true">231.03588</span></span></a> <a title="Uranium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="114" isotopes="27" melting="1405.3" href="uu.htm"><span class="symbol" aria-hidden="true">U</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">U</span><span class="name">Uranium</span><span class="number" aria-hidden="true">92</span><span class="weight" aria-hidden="true">238.02891</span></span></a> <a title="Neptunium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="115" isotopes="27" melting="910" href="np.html"><span class="symbol" aria-hidden="true">Np</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Np</span><span class="name">Neptunium</span><span class="number" aria-hidden="true">93</span><span class="weight" aria-hidden="true">237</span></span></a> <a title="Plutonium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="116" isotopes="20" melting="912.5" href="pu.html"><span class="symbol" aria-hidden="true">Pu</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Pu</span><span class="name">Plutonium</span><span class="number" aria-hidden="true">94</span><span class="weight" aria-hidden="true">244</span></span></a> <a title="Americium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="117" isotopes="20" melting="1449" href="am.html"><span class="symbol" aria-hidden="true">Am</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Am</span><span class="name">Americium</span><span class="number" aria-hidden="true">95</span><span class="weight" aria-hidden="true">243</span></span></a> <a title="Curium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="118" isotopes="21" melting="1613" href="cm.html"><span class="symbol" aria-hidden="true">Cm</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Cm</span><span class="name">Curium</span><span class="number" aria-hidden="true">96</span><span class="weight" aria-hidden="true">247</span></span></a> <a title="Berkelium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="119" isotopes="21" melting="1259" href="bk.html"><span class="symbol" aria-hidden="true">Bk</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Bk</span><span class="name">Berkelium</span><span class="number" aria-hidden="true">97</span><span class="weight" aria-hidden="true">247</span></span></a> <a title="Californium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="120" isotopes="20" melting="1173" href="cf.html"><span class="symbol" aria-hidden="true">Cf</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Cf</span><span class="name">Californium</span><span class="number" aria-hidden="true">98</span><span class="weight" aria-hidden="true">251</span></span></a> <a title="Einsteinium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="121" isotopes="20" melting="1133" href="es.html"><span class="symbol" aria-hidden="true">Es</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Es</span><span class="name">Einsteinium</span><span class="number" aria-hidden="true">99</span><span class="weight" aria-hidden="true">252</span></span></a> <a title="Fermium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="122" isotopes="20" melting="1800" href="fm.html"><span class="symbol" aria-hidden="true">Fm</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Fm</span><span class="name">Fermium</span><span class="number" aria-hidden="true">100</span><span class="weight" aria-hidden="true">257</span></span></a> <a title="Mendelevium" class="element REAc actinoid bottom-row metal inner-transition radioactive" position="123" isotopes="18" melting="1100" href="md.html"><span class="symbol" aria-hidden="true">Md</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">Md</span><span class="name">Mendelevium</span><span class="number" aria-hidden="true">101</span><span class="weight" aria-hidden="true">258</span></span></a> <a title="click for products" class="element REAc actinoid bottom-row metal inner-transition radioactive nomelt" melting="8000" position="124" isotopes="17" href="no.html"><span class="symbol" aria-hidden="true">No</span><span class="element-item2 actinoid metal inner-transition"><span class="symbol2" aria-hidden="true">No</span><span class="name">Nobelium</span><span class="number" aria-hidden="true">102</span><span class="weight" aria-hidden="true">259</span></span></a> <a title="click for products" class="element REAc actinoid bottom-row metal inner-transition radioactive nomelt right-margin" melting="8000" position="125" isotopes="16" href="lr.html"><span class="symbol" aria-hidden="true">Lr</span><span class="element-item2 lanthanoid metal inner-transition"><span class="symbol2" aria-hidden="true">Lr</span><span class="name">Lawrencium</span><span class="number" aria-hidden="true">103</span><span class="weight" aria-hidden="true">262</span></span></a> <div> </div> </div> <div id="now-invent" class="nowcolo"><div><a href="https://www.americanelements.com/american-elements-case-studies" style="text-decoration:none">Now Invent</a></div> <div><span class="round notranslate">.</span><sup class="notranslate">TM</sup></div></div> <div id="search-box" class="notranslate"> <form class="input-group notranslate" role="search" method="get" action="https://www.americanelements.com/cgi-bin/search.cgi"> <input type="text" class="form-control" placeholder="Search by Keyword, 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