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23 August, 23:04

The atomic number of a nucleus decreases during which nuclear reactions?

A. Nuclear fission and alpha decay

B. Nuclear fusion and beta decay (positron emission)

C. Nuclear fission and beta decay (electron emission)

D. Nuclear fusion and alpha decay

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Answers (2)
  1. 23 August, 23:23
    0
    Nuclear fusion and beta decay (electron emission)
  2. 24 August, 02:34
    0
    A.

    but aren't A and D the same?
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