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Unilorin Post-UTME Chemistry 2022 (Model questions) Question 8

Question 8

Atomic Structure

The discovery that protons and neutrons are concentrated at the nucleus of an atom was postulated by

  1. A.E. Rutherford
  2. B.J. Dalton
  3. C.J-. J. Thomson
  4. D.N. Bohr
Show the answer and explanation

Answer: A (E. Rutherford)

Explanation

Rutherford's alpha-particle scattering experiment showed that the mass and positive charge of an atom are packed into a tiny nucleus.