JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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Assertion :- Mass numbers of most of the elements are fractional.

Reason :- Mass numbers are obtained by comparing with the mass number of carbon taken as
12.

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Correct option: D

If both Assertion & Reason are False

Option D is correct because both the Assertion and Reason are false. Mass numbers are integers, and atomic masses are obtained by comparing with the mass of carbon-12.

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