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JAMB Chemistry 2001 Question 8

Question 8

Atomic Structure

Millikan's contribution to the development of atomic theory is the determination of

  1. A.charge on electron
  2. B.positive rays
  3. C.charge to mass ratio
  4. D.cathode rays.
Show the answer and explanation

Answer: A (charge on electron)

Explanation

In his oil-drop experiment Millikan measured the charge carried by a single electron. J. J. Thomson had earlier found the charge-to-mass ratio.