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JAMB Physics 1980 Question 3

Question 3

Radioactivity and Nuclear Physics

Which of the following statements are true in the structure of atoms?

  1. A.The atoms of the different elements differ only in the number of protons and electrons
  2. B.The number of protons equals the number of electrons
  3. C.Atoms are constructed according to the plan of our solar system
  4. D.All of the above
  5. E.A and C only.
Show the answer and explanation

Answer: B (The number of protons equals the number of electrons)

Explanation

A neutral atom has as many electrons as protons. Atoms also differ in their numbers of neutrons, and electrons do not move in planet-like orbits, so A and C are not correct.