JAMB Physics 1985 Question 50

Question 50

Radioactivity and Nuclear Physics

What is the number of neutrons in the Uranium isotope 23892X?

  1. A.92
  2. B.146
  3. C.238
  4. D.330
  5. E.119
Show the answer and explanation

Answer: B (146)

Explanation

Neutrons = mass number − atomic number = 238 − 92 = 146.