The Element Zinc Has Two Naturally Occurring Isotopes The Atomic Mass of Naturally Occurring Zinc Is
A) 112

question 1

Multiple Choice

The element zinc has two naturally occurring isotopes. The natural abundances and isotopic masses are

$\begin{array}{|l|l|l|}\hline \text { Isotope } & \% \text { Abundance } & \text { Isotopic Mass } \\\hline & & \\\hline { }^{113} \mathrm{Zn}& 4.29 & 112.904 \\\hline { }^{115} \mathrm{Zn}& 95.71 & 114.904 \\\hline\end{array}$

The atomic mass of naturally occurring zinc is

• A) 112.990
• B) 113.582
• C) 113.904
• D) 114.582
• E) 114.818

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