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id="navbar-collapse"> <nav role="navigation"> <ul class="menu nav navbar-nav"><li class="first leaf"><a href="/chemdex/">Home</a></li> <li class="leaf"><a href="/chemdex/chemistry/vn_element_selection">VN grid</a></li> <li class="leaf"><a href="/chemdex/chemistry/on_element_selection">ON Grid</a></li> <li class="leaf"><a href="/chemdex/chemistry/cn_element_selection">CN grid</a></li> <li class="leaf"><a href="/chemdex/chemistry/en_element_selection">EN grid</a></li> <li class="leaf"><a href="/chemdex/chemistry/xn_element_selection" title="">XN grid</a></li> <li class="leaf"><a href="/chemdex/chemistry/ln_element_selection">LN grid</a></li> <li class="leaf"><a href="/chemdex/chemistry/zn_element_selection">ZN grid</a></li> <li class="leaf"><a href="/chemdex/chemistry/bn_element_selection">BN grid</a></li> <li class="leaf"><a href="/chemdex/chemistry/vn_cn_element_selection" title="VN vs. CN">VN–CN</a></li> <li class="leaf"><a href="/chemdex/chemistry/vn_en_element_selection" title="VN vs. EN plot">VN–EN</a></li> <li class="leaf"><a href="/chemdex/chemistry/vn_on_element_selection" title="VN vs. ON">VN–ON</a></li> <li class="leaf"><a href="/chemdex/chemistry/on_cn_element_selection" title="ON vs. CN">ON–CN</a></li> <li class="leaf"><a href="/chemdex/chemistry/on_en_element_selection" title="ON vs. EN">ON–EN</a></li> <li class="leaf"><a href="/chemdex/chemistry/xn_cn_element_selection" title="X vs. CN">XN–CN</a></li> <li class="leaf"><a href="/chemdex/chemistry/cn_en_element_selection">CN–EN</a></li> <li class="leaf"><a href="/chemdex/chemistry/ln_bn_element_selection" title="LN vs. BN">LN–BN</a></li> <li class="leaf active-trail active"><a href="/chemdex/chemistry/vn_bn_element_selection" title="VN vs. BN" class="active-trail active">VN–BN</a></li> <li class="leaf"><a href="/chemdex/chemistry/on_bn_element_selection" title="ON vs. BN">ON–BN</a></li> <li class="leaf"><a href="/chemdex/chemistry/cn_bn_element_selection">CN–BN</a></li> <li class="leaf"><a 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id="node-23827" class="node node-page clearfix" about="/chemdex/chemistry/vn_bn_element_selection" typeof="foaf:Document"> <header> <span property="dc:title" content="Valence number (VN) vs. bond number (BN) selection" class="rdf-meta element-hidden"></span> </header> <div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even" property="content:encoded"><p>This page displays a chemical periodic table based based upon empirical data within this <strong>Chemdex</strong> database. You can plot <strong>VN–BN</strong> grids for individual elements by selecting a <strong>single element</strong>, or <strong>all the elements in a group</strong> by selecting the group number, or <strong>all the elements in a period</strong> by selecting the period number.</p> <p>Beneath the periodic table are a number of other sets of elements sometimes used when exploring periodicity.</p> <p>The <strong>group (1➝18)</strong> labelling is the IUPAC numbering system. The <strong>group (G17←G0)</strong> labelling is a numbering system <em>decreasing</em> left to right from <strong>G17</strong> to <strong>G0</strong> denoting the number of electrons required from attached groups to achieve the 8-electron (octet) or 18-electron counts often associated with <em>p-</em> or <em>d-block</em> compounds.</p> <h2>Chemical periodic table</h2> <div class="table-responsive"> <table id="periodic_table_std" class="periodic_table"> <caption class="periodic_table_caption">Explore <strong>valence number (VN)</strong>–<strong>bond number (BN)</strong> for compounds of the elements through this periodic table.</caption> <tr> <th class="w8i">Groups (G17←G0)</th> <th class="w5"><a href="vn_bn_grid?element=g17" title="VN–BN plot for Group G17 (IUPAC Group 1) elements">G17</a></th> <th class="w5"><a href="vn_bn_grid?element=g16" title="VN–BN plot for Group G16 (IUPAC Group 2) elements">G16</a></th> <th class="w2"> </th> <th class="w5"><a href="vn_bn_grid?element=g15" title="VN–BN plot for Group G15 (IUPAC Group 3) elements">G15</a></th> <th class="w5"><a href="vn_bn_grid?element=g14" title="VN–BN plot for Group G14 (IUPAC Group 4) elements">G14</a></th> <th class="w5"><a href="vn_bn_grid?element=g13" title="VN–BN plot for Group G13 (IUPAC Group 5) elements">G13</a></th> <th class="w5"><a href="vn_bn_grid?element=g12" title="VN–BN plot for Group G12 (IUPAC Group 6) elements">G12</a></th> <th class="w5"><a href="vn_bn_grid?element=g11" title="VN–BN plot for Group G11 (IUPAC Group 7) elements">G11</a></th> <th class="w5"><a href="vn_bn_grid?element=g10" title="VN–BN plot for Group G10 (IUPAC Group 8) elements">G10</a></th> <th class="w5"><a href="vn_bn_grid?element=g9" title="VN–BN plot for Group G9 (IUPAC Group 9) elements">G9</a></th> <th class="w5"><a href="vn_bn_grid?element=g8" title="VN–BN plot for Group G8 (IUPAC Group 10) elements">G8</a></th> <th class="w5"><a href="vn_bn_grid?element=g7" title="VN–BN plot for Group G7 (IUPAC Group 11) elements">G7</a></th> <th class="w5"><a href="vn_bn_grid?element=g6" title="VN–BN plot for Group G6 (IUPAC Group 12) elements">G6</a></th> <th class="w5"><a href="vn_bn_grid?element=g5" title="VN–BN plot for Group G5 (IUPAC Group 13) elements">G5</a></th> <th class="w5"><a href="vn_bn_grid?element=g4" title="VN–BN plot for Group G4 (IUPAC Group 14) elements">G4</a></th> <th class="w5"><a href="vn_bn_grid?element=g3" title="VN–BN plot for Group G3 (IUPAC Group 15) elements">G3</a></th> <th class="w5"><a href="vn_bn_grid?element=g2" title="VN–BN plot for Group G2 (IUPAC Group 16) elements">G2</a></th> <th class="w5"><a href="vn_bn_grid?element=g1" title="VN–BN plot for Group G1 (IUPAC Group 17) elements">G1</a></th> <th class="w5"><a href="vn_bn_grid?element=g0" title="VN–BN plot for Group G0 (IUPAC Group 18) elements">G0</a></th> </tr> <tr> <th class="w8i">IUPAC (1➝18)➝</th> <th class="w5i"><a href="vn_bn_grid?element=group1_alt" title="VN–BN plot for Group G17 (IUPAC group 1) elements">1</a></th> <th class="w5i"><a href="vn_bn_grid?element=group2" title="VN–BN plot for Group G16 (IUPAC group 2) elements">2</a></th> <th class="w2i"> </th> <th class="w5i"><a href="vn_bn_grid?element=group3" title="VN–BN plot for Group G15 (IUPAC group 3) elements">3</a></th> <th class="w5i"><a href="vn_bn_grid?element=group4" title="VN–BN plot for Group G14 (IUPAC group 4) elements">4</a></th> <th class="w5i"><a href="vn_bn_grid?element=group5" title="VN–BN plot for Group G13 (IUPAC group 5) elements">5</a></th> <th class="w5i"><a href="vn_bn_grid?element=group6" title="VN–BN plot for Group G12 (IUPAC group 6) elements">6</a></th> <th class="w5i"><a href="vn_bn_grid?element=group7" title="VN–BN plot for Group G11 (IUPAC group 7) elements">7</a></th> <th class="w5i"><a href="vn_bn_grid?element=group8" title="VN–BN plot for Group G10 (IUPAC group 8) elements">8</a></th> <th class="w5i"><a href="vn_bn_grid?element=group9" title="VN–BN plot for Group G9 (IUPAC group 9) elements">9</a></th> <th class="w5i"><a href="vn_bn_grid?element=group10" title="VN–BN plot for Group G8 (IUPAC group 10) elements">10</a></th> <th class="w5i"><a href="vn_bn_grid?element=group11" title="VN–BN plot for Group G7 (IUPAC group 11) elements">11</a></th> <th class="w5i"><a href="vn_bn_grid?element=group12" title="VN–BN plot for Group G6 (IUPAC group 12) elements">12</a></th> <th class="w5i"><a href="vn_bn_grid?element=group13" title="VN–BN plot for Group G5 (IUPAC group 13) elements">13</a></th> <th class="w5i"><a href="vn_bn_grid?element=group14" title="VN–BN plot for Group G4 (IUPAC group 14) elements">14</a></th> <th class="w5i"><a href="vn_bn_grid?element=group15" title="VN–BN plot for Group G3 (IUPAC group 15) elements">15</a></th> <th class="w5i"><a href="vn_bn_grid?element=group16" title="VN–BN plot for Group G2 (IUPAC group 16) elements">16</a></th> <th class="w5i"><a href="vn_bn_grid?element=group17" title="VN–BN plot for Group G1 (IUPAC group 17) elements">17</a></th> <th class="w5i"><a href="vn_bn_grid?element=group18" title="VN–BN plot for Group G0 (IUPAC group 18) elements">18</a></th> </tr> <tr> <th class="w8i"> <br />Period</th> <td></td> <td colspan="18"></td> </tr> <tr> <th class="lbl"><a href="vn_bn_grid?element=p1" title="VN–BN plot for period 1 elements">P1</a></th> <td></td> <td></td> <td colspan="15"></td> <td class="xs"><small>1</small><br /><a href="vn_bn_grid?element=H" title="hydrogen VN–BN plot">H</a></td> <td class="xs"><small>2</small><br /><a href="vn_bn_grid?element=He" title="He VN–BN plot">He</a></td> </tr> <tr> <th class="w8"><a href="vn_bn_grid?element=p2" title="VN–BN plot for period 2 elements">P2</a></th> <td class="xs"><small>3</small><br /><a href="vn_bn_grid?element=Li" title="lithium VN–BN plot">Li</a></td> <td class="xs"><small>4</small><br /><a href="vn_bn_grid?element=Be" title="beryllium VN–BN plot">Be</a></td> <td colspan="11" class="xz"></td> <td class="xp"><small>5</small><br /><a href="vn_bn_grid?element=B" title="boron VN–BN plot">B</a></td> <td class="xp"><small>6</small><br /><a href="vn_bn_grid?element=C" title="carbon VN–BN plot">C</a></td> <td class="xp"><small>7</small><br /><a href="vn_bn_grid?element=N" title="nitrogen VN–BN plot">N</a></td> <td class="xp"><small>8</small><br /><a href="vn_bn_grid?element=O" title="oxygen VN–BN plot">O</a></td> <td class="xp"><small>9</small><br /><a href="vn_bn_grid?element=F" title="fluorine VN–BN plot">F</a></td> <td class="xp"><small>10</small><br /><a href="vn_bn_grid?element=Ne" title="neon VN–BN plot">Ne</a></td> </tr> <tr> <th class="lbl"><a href="vn_bn_grid?element=p3" title="VN–BN plot for period 3 elements">P3</a></th> <td class="xs"><small>11</small><br /><a href="vn_bn_grid?element=Na" title="sodium VN–BN plot">Na</a></td> <td class="xs"><small>12</small><br /><a href="vn_bn_grid?element=Mg" title="magnesium VN–BN plot">Mg</a></td> <td colspan="11" class="xz"></td> <td class="xp"><small>13</small><br /><a href="vn_bn_grid?element=Al" title="aluminium (aluminum in US) VN–BN plot">Al</a></td> <td class="xp"><small>14</small><br /><a href="vn_bn_grid?element=Si" title="silicon VN–BN plot">Si</a></td> <td class="xp"><small>15</small><br /><a href="vn_bn_grid?element=P" title="phosphorus VN–BN plot">P</a></td> <td class="xp"><small>16</small><br /><a href="vn_bn_grid?element=S" title="sulfur (sulphur in UK and elsewhere) VN–BN plot">S</a></td> <td class="xp"><small>17</small><br /><a href="vn_bn_grid?element=Cl" title="chlorine VN–BN plot">Cl</a></td> <td class="xp"><small>18</small><br /><a href="vn_bn_grid?element=Ar" title="argon VN–BN plot">Ar</a></td> </tr> <tr> <th class="lbl"><a href="vn_bn_grid?element=p4" title="VN–BN plot for period 4 elements">P4</a></th> <td class="xs"><small>19</small><br /><a href="vn_bn_grid?element=K" title="potassium VN–BN plot">K</a></td> <td class="xs"><small>20</small><br /><a href="vn_bn_grid?element=Ca" title="calcium VN–BN plot">Ca</a></td> <td></td> <td class="xd"><small>21</small><br /><a href="vn_bn_grid?element=Sc" title="scandium VN–BN plot">Sc</a></td> <td class="xd"><small>22</small><br /><a href="vn_bn_grid?element=Ti" title="titanium VN–BN plot">Ti</a></td> <td class="xd"><small>23</small><br /><a href="vn_bn_grid?element=V" title="vanadium VN–BN plot">V</a></td> <td class="xd"><small>24</small><br /><a href="vn_bn_grid?element=Cr" title="chromium VN–BN plot">Cr</a></td> <td class="xd"><small>25</small><br /><a href="vn_bn_grid?element=Mn" title="manganese VN–BN plot">Mn</a></td> <td class="xd"><small>26</small><br /><a href="vn_bn_grid?element=Fe" title="iron VN–BN plot">Fe</a></td> <td class="xd"><small>27</small><br /><a href="vn_bn_grid?element=Co" title="cobalt VN–BN plot">Co</a></td> <td class="xd"><small>28</small><br /><a href="vn_bn_grid?element=Ni" title="nickel VN–BN plot">Ni</a></td> <td class="xd"><small>29</small><br /><a href="vn_bn_grid?element=Cu" title="copper VN–BN plot">Cu</a></td> <td class="xd"><small>30</small><br /><a href="vn_bn_grid?element=Zn" title="zinc VN–BN plot">Zn</a></td> <td class="xp"><small>31</small><br /><a href="vn_bn_grid?element=Ga" title="gallium VN–BN plot">Ga</a></td> <td class="xp"><small>32</small><br /><a href="vn_bn_grid?element=Ge" title="germanium VN–BN plot">Ge</a></td> <td class="xp"><small>33</small><br /><a href="vn_bn_grid?element=As" title="arsenic VN–BN plot">As</a></td> <td class="xp"><small>34</small><br /><a href="vn_bn_grid?element=Se" title="selenium VN–BN plot">Se</a></td> <td class="xp"><small>35</small><br /><a href="vn_bn_grid?element=Br" title="bromine VN–BN plot">Br</a></td> <td class="xp"><small>36</small><br /><a href="vn_bn_grid?element=Kr" title="krypton VN–BN plot">Kr</a></td> </tr> <tr> <th class="lbl"><a href="vn_bn_grid?element=p5" title="VN–BN plot for period P5 elements">P5</a></th> <td class="xs"><small>37</small><br /><a href="vn_bn_grid?element=Rb" title="rubidium VN–BN plot">Rb</a></td> <td class="xs"><small>38</small><br /><a href="vn_bn_grid?element=Sr" title="strontium VN–BN plot">Sr</a></td> <td></td> <td class="xd"><small>39</small><br /><a href="vn_bn_grid?element=Y" title="yttrium VN–BN plot">Y</a></td> <td class="xd"><small>40</small><br /><a href="vn_bn_grid?element=Zr" title="zirconium VN–BN plot">Zr</a></td> <td class="xd"><small>41</small><br /><a href="vn_bn_grid?element=Nb" title="niobium VN–BN plot">Nb</a></td> <td class="xd"><small>42</small><br /><a href="vn_bn_grid?element=Mo" title="molybdenum VN–BN plot">Mo</a></td> <td class="xd"><small>43</small><br /><a href="vn_bn_grid?element=Tc" title="technetium VN–BN plot">Tc</a></td> <td class="xd"><small>44</small><br /><a href="vn_bn_grid?element=Ru" title="ruthenium VN–BN plot">Ru</a></td> <td class="xd"><small>45</small><br /><a href="vn_bn_grid?element=Rh" title="rhodium VN–BN plot">Rh</a></td> <td class="xd"><small>46</small><br /><a href="vn_bn_grid?element=Pd" title="palladium VN–BN plot">Pd</a></td> <td class="xd"><small>47</small><br /><a href="vn_bn_grid?element=Ag" title="silver VN–BN plot">Ag</a></td> <td class="xd"><small>48</small><br /><a href="vn_bn_grid?element=Cd" title="cadmium VN–BN plot">Cd</a></td> <td class="xp"><small>49</small><br /><a href="vn_bn_grid?element=In" title="indium VN–BN plot">In</a></td> <td class="xp"><small>50</small><br /><a href="vn_bn_grid?element=Sn" title="tin VN–BN plot">Sn</a></td> <td class="xp"><small>51</small><br /><a href="vn_bn_grid?element=Sb" title="antimony VN–BN plot">Sb</a></td> <td class="xp"><small>52</small><br /><a href="vn_bn_grid?element=Te" title="tellurium VN–BN plot">Te</a></td> <td class="xp"><small>53</small><br /><a href="vn_bn_grid?element=I" title="iodine VN–BN plot">I</a></td> <td class="xp"><small>54</small><br /><a href="vn_bn_grid?element=Xe" title="xenon VN–BN plot">Xe</a></td> </tr> <tr> <th class="lbl"><a href="vn_bn_grid?element=p6" title="VN–BN plot for period 6 elements">P6</a></th> <td class="xs"><small>55</small><br /><a href="vn_bn_grid?element=Cs" title="caesium (cesium in US) VN–BN plot">Cs</a></td> <td class="xs"><small>56</small><br /><a href="vn_bn_grid?element=Ba" title="barium VN–BN plot">Ba</a></td> <td class="xz">*</td> <td class="xd"><small>71</small><br /><a href="vn_bn_grid?element=Lu" title="lutetium VN–BN plot">Lu</a></td> <td class="xd"><small>72</small><br /><a href="vn_bn_grid?element=Hf" title="hafnium VN–BN plot">Hf</a></td> <td class="xd"><small>73</small><br /><a href="vn_bn_grid?element=Ta" title="tantalum VN–BN plot">Ta</a></td> <td class="xd"><small>74</small><br /><a href="vn_bn_grid?element=W" title="tungsten VN–BN plot">W</a></td> <td class="xd"><small>75</small><br /><a href="vn_bn_grid?element=Re" title="rhenium VN–BN plot">Re</a></td> <td class="xd"><small>76</small><br /><a href="vn_bn_grid?element=Os" title="osmium VN–BN plot">Os</a></td> <td class="xd"><small>77</small><br /><a href="vn_bn_grid?element=Ir" title="iridium VN–BN plot">Ir</a></td> <td class="xd"><small>78</small><br /><a href="vn_bn_grid?element=Pt" title="platinum VN–BN plot">Pt</a></td> <td class="xd"><small>79</small><br /><a href="vn_bn_grid?element=Au" title="gold VN–BN plot">Au</a></td> <td class="xd"><small>80</small><br /><a href="vn_bn_grid?element=Hg" title="mercury VN–BN plot">Hg</a></td> <td class="xp"><small>81</small><br /><a href="vn_bn_grid?element=Tl" title="thallium VN–BN plot">Tl</a></td> <td class="xp"><small>82</small><br /><a href="vn_bn_grid?element=Pb" title="lead VN–BN plot">Pb</a></td> <td class="xp"><small>83</small><br /><a href="vn_bn_grid?element=Bi" title="bismuth VN–BN plot">Bi</a></td> <td class="xp"><small>84</small><br /><a href="vn_bn_grid?element=Po" title="polonium VN–BN plot">Po</a></td> <td class="xp"><small>85</small><br /><a href="vn_bn_grid?element=At" title="astatine VN–BN plot">At</a></td> <td class="xp"><small>86</small><br /><a href="vn_bn_grid?element=Rn" title="radon VN–BN plot">Rn</a></td> </tr> <tr> <th class="lbl"><a href="vn_bn_grid?element=p7" title="VN–BN plot for period 7 elements">P7</a></th> <td class="xs"><small>87</small><br /><a href="vn_bn_grid?element=Fr" title="francium VN–BN plot">Fr</a></td> <td class="xs"><small>88</small><br /><a href="vn_bn_grid?element=Ra" title="radium VN–BN plot">Ra</a></td> <td class="xz">**</td> <td class="xd"><small>103</small><br /><a href="vn_bn_grid?element=Lr" title="lawrencium VN–BN plot">Lr</a></td> <td class="xd"><small>104</small><br /><a href="vn_bn_grid?element=Rf" title="rutherfordium VN–BN plot">Rf</a></td> <td class="xd"><small>105</small><br /><a href="vn_bn_grid?element=Db" title="dubnium VN–BN plot">Db</a></td> <td class="xd"><small>106</small><br /><a href="vn_bn_grid?element=Sg" title="seaborgium VN–BN plot">Sg</a></td> <td class="xd"><small>107</small><br /><a href="vn_bn_grid?element=Bh" title="bohrium VN–BN plot">Bh</a></td> <td class="xd"><small>108</small><br /><a href="vn_bn_grid?element=Hs" title="hassium VN–BN plot">Hs</a></td> <td class="xd"><small>109</small><br /><a href="vn_bn_grid?element=Mt" title="meitnerium VN–BN plot">Mt</a></td> <td class="xd"><small>110</small><br /><a href="vn_bn_grid?element=Ds" title="darmstadtium VN–BN plot">Ds</a></td> <td class="xd"><small>111</small><br /><a href="vn_bn_grid?element=Rg" title="roentgenium VN–BN plot">Rg</a></td> <td class="xd"><small>112</small><br /><a href="vn_bn_grid?element=Cn" title="copernicium VN–BN plot">Cn</a></td> <td class="xp"><small>113</small><br /><a href="vn_bn_grid?element=Nh" title="nihonium VN–BN plot">Nh</a></td> <td class="xp"><small>114</small><br /><a href="vn_bn_grid?element=Fl" title="flerovium VN–BN plot">Fl</a></td> <td class="xp"><small>115</small><br /><a href="vn_bn_grid?element=Mc" title="moscovium VN–BN plot">Mc</a></td> <td class="xp"><small>116</small><br /><a href="vn_bn_grid?element=Lv" title="livermorium VN–BN plot">Lv</a></td> <td class="xp"><small>117</small><br /><a href="vn_bn_grid?element=Ts" title="tennessine VN–BN plot">Ts</a></td> <td class="xp"><small>118</small><br /><a href="vn_bn_grid?element=Og" title="oganesson VN–BN plot">Og</a></td> </tr> <tr> <td> </td> <td> </td> <td> </td> <td> </td> <td colspan="14"></td> <td> </td> <td> </td> </tr> <tr> <th class="lbl" colspan="3"><a href="vn_bn_grid?element=lanthanoids" title="VN–BN plot for lanthanoid elements">Lanthanoids</a> (P6)</th> <td class="xz">*</td> <td class="xf"><small>57</small><br /><a href="vn_bn_grid?element=La" title="lanthanum VN–BN plot">La</a></td> <td class="xf"><small>58</small><br /><a href="vn_bn_grid?element=Ce" title="cerium VN–BN plot">Ce</a></td> <td class="xf"><small>59</small><br /><a href="vn_bn_grid?element=Pr" title="praseodymium VN–BN plot">Pr</a></td> <td class="xf"><small>60</small><br /><a href="vn_bn_grid?element=Nd" title="neodymium VN–BN plot">Nd</a></td> <td class="xf"><small>61</small><br /><a href="vn_bn_grid?element=Pm" title="promethium VN–BN plot">Pm</a></td> <td class="xf"><small>62</small><br /><a href="vn_bn_grid?element=Sm" title="samarium VN–BN plot">Sm</a></td> <td class="xf"><small>63</small><br /><a href="vn_bn_grid?element=Eu" title="europium VN–BN plot">Eu</a></td> <td class="xf"><small>64</small><br /><a href="vn_bn_grid?element=Gd" title="gadolinium VN–BN plot">Gd</a></td> <td class="xf"><small>65</small><br /><a href="vn_bn_grid?element=Tb" title="terbium VN–BN plot">Tb</a></td> <td class="xf"><small>66</small><br /><a href="vn_bn_grid?element=Dy" title="dysprosium VN–BN plot">Dy</a></td> <td class="xf"><small>67</small><br /><a href="vn_bn_grid?element=Ho" title="holmium VN–BN plot">Ho</a></td> <td class="xf"><small>68</small><br /><a href="vn_bn_grid?element=Er" title="erbium VN–BN plot">Er</a></td> <td class="xf"><small>69</small><br /><a href="vn_bn_grid?element=Tm" title="thulium VN–BN plot">Tm</a></td> <td class="xf"><small>70</small><br /><a href="vn_bn_grid?element=Yb" title="ytterbium VN–BN plot">Yb</a></td> <td colspan="2"></td> </tr> <tr> <th class="lbl" colspan="3"><a href="vn_bn_grid?element=actinoids" title="VN–BN plot for actinoid elements">Actinoids</a> (P7)</th> <td class="xz">**</td> <td class="xf"><small>89</small><br /><a href="vn_bn_grid?element=Ac" title="actinium VN–BN plot">Ac</a></td> <td class="xf"><small>90</small><br /><a href="vn_bn_grid?element=Th" title="thorium VN–BN plot">Th</a></td> <td class="xf"><small>91</small><br /><a href="vn_bn_grid?element=Pa" title="protactinium VN–BN plot">Pa</a></td> <td class="xf"><small>92</small><br /><a href="vn_bn_grid?element=U" title="uranium VN–BN plot">U</a></td> <td class="xf"><small>93</small><br /><a href="vn_bn_grid?element=Np" title="neptunium VN–BN plot">Np</a></td> <td class="xf"><small>94</small><br /><a href="vn_bn_grid?element=Pu" title="plutonium VN–BN plot">Pu</a></td> <td class="xf"><small>95</small><br /><a href="vn_bn_grid?element=Am" title="americium VN–BN plot">Am</a></td> <td class="xf"><small>96</small><br /><a href="vn_bn_grid?element=Cm" title="curium VN–BN plot">Cm</a></td> <td class="xf"><small>97</small><br /><a href="vn_bn_grid?element=Bk" title="berkelium VN–BN plot">Bk</a></td> <td class="xf"><small>98</small><br /><a href="vn_bn_grid?element=Cf" title="californium VN–BN plot">Cf</a></td> <td class="xf"><small>99</small><br /><a href="vn_bn_grid?element=Es" title="einsteinium VN–BN plot">Es</a></td> <td class="xf"><small>100</small><br /><a href="vn_bn_grid?element=Fm" title="fermium VN–BN plot">Fm</a></td> <td class="xf"><small>101</small><br /><a href="vn_bn_grid?element=Md" title="mendelevium VN–BN plot">Md</a></td> <td class="xf"><small>102</small><br /><a href="vn_bn_grid?element=No" title="nobelium VN–BN plot">No</a></td> <td colspan="2"></td> </tr> </table> </div> <h2>Other element selections</h2> <p>Here are some other sets of elements that you might want to try. These are selected to help you evaluate suggestions regarding alternative locations of some elements in the periodic table and also other relationships referred to as "diagonal" relationships and "knight's move" relationships.</p> <ul> <li>Elements 1➝18 (H➝Ar) starting with H: <a href="vn_bn_grid?element=p1;p2;p3" title="VN–BN plot for elements 1➝18">Elements 1➝18 (H➝Ar)</a></li> <li>Elements 1➝36 (H➝Kr) starting with H: <a href="vn_bn_grid?element=p1;p2;p3;p4" title="VN–BN plot for elements 1➝36">Elements 1➝36 (H➝Kr)</a></li> <li>All elements 1➝118 (H➝Og) starting with H: <a href="vn_bn_grid?element=p1;p2;p3;p4;p5;p6;p7" title="VN–BN plot for elements 1➝118">Elements 1➝118 (H➝Og)</a></li> <li>H above Group G17 (IUPAC group 1): <a href="vn_bn_grid?element=H;g17" title="VN–BN plot for hydrogen➝lithium➝sodium➝potassium➝rubidium➝caesium➝francium">hydrogen➝lithium➝sodium➝potassium➝rubidium➝caesium➝francium</a></li> <li>Li and Na above Group G7 (IUPAC group 11): <a href="vn_bn_grid?element=Li;Na;g7" title="VN–BN plot for lithium➝sodium➝copper➝silver➝gold➝roentgenium">lithium➝sodium➝copper➝silver➝gold➝roentgenium</a></li> <li>Be and Mg above Group G6 (IUPAC group 12): <a href="vn_bn_grid?element=Be;Mg;g6" title="VN–BN plot forlberyllium➝magnesium➝zinc➝cadmium➝mercury➝copernicium">beryllium➝magnesium➝zinc➝cadmium➝mercury➝copernicium</a></li> <li>B and Al above Group G15 (IUPAC group 3): <a href="vn_bn_grid?element=B;Al;g15" title="VN–BN plot for boron➝aluminium➝scandium➝yttrium➝lutetium➝actinium➝lawrencium">boron➝aluminium➝scandium➝yttrium➝lutetium➝actinium➝lawrencium</a></li> <li>Al above Group G15 (IUPAC group 3): <a href="vn_bn_grid?element=Al;g15" title="VN–BN plot for aluminium➝scandium➝yttrium➝lutetium➝actinium➝lawrencium">aluminium➝scandium➝yttrium➝lutetium➝actinium➝lawrencium</a></li> <li>La in Group G15 (IUPAC group 3) rather than Lu: <a href="vn_bn_grid?element=Sc;Y;La;Ac" title="VN–BN plot for scandium➝yttrium➝lanthanum➝actinium">scandium➝yttrium➝lanthanum➝actinium</a></li> <li>Si above Group G14 (IUPAC group 4): <a href="vn_bn_grid?element=Si;g14" title="VN–BN plot for silicon➝titanium➝zirconium➝hafnium">silicon➝titanium➝zirconium➝hafnium</a></li> <li>P above Group G13 (IUPAC group 5): <a href="vn_bn_grid?element=P;g13" title="VN–BN plot for phosphorus➝vanadium➝niobium➝tantalum">phosphorus➝vanadium➝niobium➝tantalum</a></li> <li>S above Group G12 (IUPAC group 6): <a href="vn_bn_grid?element=S;g12" title="VN–BN plot for sulphur➝chromium➝molybdenum➝tungsten">sulphur➝chromium➝molybdenum➝tungsten</a></li> <li>Cl above Group G11 (IUPAC group 7): <a href="vn_bn_grid?element=Cl;g11" title="VN–BN plot for chlorine➝manganese➝technetium➝rhenium">chlorine➝manganese➝technetium➝rhenium</a></li> <li>Th within Group G14 (IUPAC group 4): <a href="vn_bn_grid?element=g14_alt" title="VN–BN plot for titanium➝zirconium➝hafnium➝thorium➝rutherfordium">titanium➝zirconium➝hafnium➝thorium➝rutherfordium</a></li> <li>Pa within Group G13 (IUPAC group 5): <a href="vn_bn_grid?element=g13_alt" title="VN–BN plot for vanadium➝niobium➝tantalum➝protactinium➝dubnium">vanadium➝niobium➝tantalum➝protactinium➝dubnium</a></li> <li>U within Group G12 (IUPAC group 6): <a href="vn_bn_grid?element=g12_alt" title="VN–BN plot for chromium➝molybdenum➝tungsten➝uranium➝seaborgium">chromium➝molybdenum➝tungsten➝uranium➝seaborgium</a></li> <li>Np within Group G11 (IUPAC group 7): <a href="vn_bn_grid?element=g11_alt" title="VN–BN plot for manganese➝technetium➝rhenium➝neptunium➝bohrium">manganese➝technetium➝rhenium➝neptunium➝bohrium</a></li> <li>Pu within Group G10 (IUPAC group 8): <a href="vn_bn_grid?element=g10_alt" title="VN–BN plot for iron➝ruthenium➝osmium➝plutonium➝hassium">iron➝ruthenium➝osmium➝plutonium➝hassium</a></li> <li>Am within Group G9 (IUPAC group 9): <a href="vn_bn_grid?element=g9_alt" title="VN–BN plot for cobalt➝rhodium➝iridium➝americium➝meitnerium">cobalt➝rhodium➝iridium➝americium➝meitnerium</a></li> <li>Ce and Th in Group G14 (IUPAC group 4): <a href="vn_bn_grid?element=Ti;Zr;Ce;Hf;Th;Rf" title="VN–BN plot for titanium➝zirconium➝cerium➝hafnium➝thorium➝rutherfordium">titanium➝zirconium➝cerium➝hafnium➝thorium➝rutherfordium</a></li> <li>Diagonal relationships starting with Li: <a href="vn_bn_grid?element=Li;Mg;Ga;Sn;Bi" title="VN–BN plot for lithium➝magnesium➝gallium➝tin➝bismuth">lithium➝magnesium➝gallium➝tin➝bismuth</a></li> <li>Diagonal relationships starting with Be: <a href="vn_bn_grid?element=Be;Al;Ge;Sb;Po" title="VN–BN plot for beryllium➝aluminium➝germanium➝antimony➝polonium">beryllium➝aluminium➝germanium➝antimony➝polonium</a></li> <li>Diagonal relationships starting with B: <a href="vn_bn_grid?element=B;Si;As;Te;At" title="VN–BN plot for boron➝silicon➝arsenic➝tellurium➝astatine">boron➝silicon➝arsenic➝tellurium➝astatine</a></li> <li>Knight's move relationships starting with Cu: <a href="vn_bn_grid?element=Cu;In;Bi" title="VN–BN plot for copper➝indium➝bismuth">copper➝indium➝bismuth</a></li> <li>Knight's move relationships starting with Zn: <a href="vn_bn_grid?element=Zn;Sn;Po" title="VN–BN plot for zinc➝tin➝polonium">zinc➝tin➝polonium</a> </li><li>Knight's move relationships starting with Ag: <a href="vn_bn_grid?element=Ag;Tl" title="VN–BN plot for silver➝thallium">silver➝thallium</a></li> <li>Knight's move relationships starting with Cd: <a href="vn_bn_grid?element=Cd;Pb" title="VN–BN plot for cadmium➝lead">cadmium➝lead</a></li> </ul> </div></div></div> </article> </section> </div> </section> </div> </div> <footer class="footer container"> <div class="region region-footer"> <section id="block-block-1" class="block block-block clearfix"> <hr /> <p>Copyright ©2025 Mark Winter. 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