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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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The element Q\mathrm{Q} has the following isotopic composition, Q200:80%;Q190:15%\mathrm{Q}^{200}: 80 \%; \mathrm{Q}^{190}: 15 \% and Q210:5%\mathrm{Q}^{210}: 5 \%. The average atomic mass of the naturally occurring element Q\mathrm{Q} is
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Correct option: C
199 u199 \mathrm{~u}
Option C (199 u) is correct because it's calculated as the weighted average of the isotopic masses based on their abundances.

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