The Element Antinomy Has Two Naturally Occurring Isotopes The Atomic Mass of Naturally Occurring Antinomy Is
A) 121

question 32

Multiple Choice

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

$\begin{array}{|l|l|l|}\hline \text { Isotope } & \% \text { Abundance } & \text { Isotopic Mass } \\\hline & & \\\hline { }^{121} \mathrm{Sb}& 57.21& 120.904 \\\hline { }^{123} \mathrm{Sb}& 42.79 & 120.904 \\\hline\end{array}$

The atomic mass of naturally occurring antinomy is

• A) 121.760
• B) 121.904
• C) 122.048
• D) 122.904
• E) 124.048

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