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JAMB Physics 2007 Question 13

Question 13

Radioactivity and Nuclear Physics

During the nuclear reactions described by 23592W → 23593X → 23191Y, the particles emitted are respectively

  1. A.β and β.
  2. B.β and α.
  3. C.α and β.
  4. D.α and α.
Show the answer and explanation

Answer: B (β and α.)

Explanation

W → X: mass number unchanged, atomic number up by 1, so a β particle is emitted. X → Y: mass number down by 4 and atomic number down by 2, so an α particle is emitted.