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2010 USNCO Local #2: Flame Test

Source:

November 21, 2012

Problem Statement

A flame test was performed to confirm the identity of a metal ion in solution. The result was a green flame. Which of the following metal ions is indicated?
<spanclass=′latex−bold′>(A)</span> copper<spanclass=′latex−bold′>(B)</span> sodium<spanclass=′latex−bold′>(C)</span> strontium<spanclass=′latex−bold′>(D)</span> zinc{ <span class='latex-bold'>(A)</span>\ \text{copper} \qquad<span class='latex-bold'>(B)</span>\ \text{sodium} \qquad<span class='latex-bold'>(C)</span>\ \text{strontium} \qquad<span class='latex-bold'>(D)</span>\ \text{zinc} }
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