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Which of the following transmutations demonstrate(s) beta decay? Bi-212 → Po-212 Pb-212 → Bi-212 Ra-228 → Ac-228 i only ii only i, ii and iii i and ii only

Which of the following transmutations demonstrate(s) beta decay?
  1. Bi-212 → Po-212
  2. Pb-212 → Bi-212
  3. Ra-228 → Ac-228
  1. i only
  2. ii only
  3. i, ii and iii
  4. i and ii only

Grade:12

1 Answers

Shivangi Khatter
askIITians Faculty 468 Points
5 years ago
dear student
the correct answer is(C)
All the three reactions are examples of beta decay. In a beta decay process, atomic mass remains same but the atomic no. increases or decreases by one unit.

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