   <span class="stringliteral">&#39;IUM&#39;</span>,  <span class="comment"># uranyl (vi) ion</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                                              <span class="stringliteral">&#39;PT&#39;</span>,  <span class="comment"># platinum (ii) ion</span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;                                              <span class="stringliteral">&#39;ZN2&#39;</span>,  <sp