An element, X has the following isotopic composition

Some Basic Concepts of Chemistry

An element, X has the following isotopic composition :

^{200}

X : 90%

^{199}

X : 8.0 %

^{202}

X : 2.0%
The weighted average atomic mass of the naturally occuring element X is closest to

A v e r a g e i s o t o p i c m a s s o f

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