MHT CET Physics question

For the radioactive nuclei that undergo either or decay, which one of the following cannot occur? [WB-JEE 2014]

(A)Isobar of original nucleus is produced
(B)Isotope of the original nucleus is producedCorrect
(C)Nuclei with higher atomic number than that of the original nucleus is produced
(D)Nuclei with lower atomic number than that of the original nucleus is produced

Answer: (B)

Solution

decay gives an isobar with higher , while decay gives a nucleus with lower , so (a), (c), (d) can occur;

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Question ID VK-084754