JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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Assertion: Isobars have the same atomic mass number but different atomic numbers.

Reason: Isobars have different numbers of neutrons.

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Correct option: A

Both Assertion and Reason are true and Reason is the correct explanation for Assertion

Option A (Both Assertion and Reason are true and Reason is the correct explanation for Assertion) is correct because isobars have the same mass number but different atomic numbers due to having different numbers of protons and neutrons, with the total number of nucleons (protons + neutrons) being the same.

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