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An element X has the following isotopic ...

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 occurring element X is closest to :

A

200 amu

B

210 amu

C

202 amu

D

199 amu

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The correct Answer is:
A
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