An Element Has Two Naturally Occurring Isotopes, as Described in the Following

question 29

Multiple Choice

An element has two naturally occurring isotopes, as described in the following table. Calculate the relative atomic mass and identify the element.
$\begin{array}{lcc}\hline \text { Isotope } & \text { Natural abundance (\%) } & \text { Relative atomic mass } \\\hline 1 & 69.17 & 62.929 \\2 & 30.83 & 64.928 \\\hline\end{array}$

• A) 63.54; europium
• B) 63.93; copper
• C) 63.54; copper
• D) 50.00; vanadium
• E) 69.17; gallium

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