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NEET UG PHYSICS MCQ: NUCLEI

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Analyzing +4 | -1
An element AA decays into element CC by a two step process
A→B+2He4A \to B{ + _2}\mathrm{H}{\mathrm{e}^4}
B→C+2−1  e0B \to C + {2_{ - 1}}\,\,{e^0}
Then
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Correct option: A
AA and CC are isotopes
Option A (AA and CC are isotopes) is correct because in the process, the mass number changes by 4-0 = 4 and the atomic number changes by 2-2 = 0. Therefore, A and C have the same atomic number but different mass numbers, making them isotopes.

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