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30 June, 15:48

What is the product of the second alpha decay in this series

A) Pa-228

B) Ra-224

C) Th-224

D) U-232

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Answers (1)
  1. 30 June, 16:02
    0
    In Alpha decay two neutrons and protons are lost, so the mass decreases by four and the atomic number decreases by two.

    Therefore the correct answer is B: Ra-224.
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