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JAMB Physics 2001 Question 39

Question 39

Radioactivity and Nuclear Physics

The particle emitted when K decays to K is

  1. A.gamma
  2. B.beta
  3. C.electron
  4. D.alpha
Show the answer and explanation

Answer: A (gamma)

Explanation

The nucleus stays potassium (same element, same atomic number), so no charged particle left it; it only lost energy as a gamma ray.