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JAMB Chemistry 1995 Question 11

Question 11

Atomic Structure

In the oil drop experiment, Millikan determined the

  1. A.charge to mass ratio of the electron
  2. B.mass of the electron
  3. C.charge of the electron
  4. D.mass of the proton
Show the answer and explanation

Answer: C (charge of the electron)

Explanation

Millikan balanced charged oil drops between charged plates and found that every charge was a multiple of one small value, the charge of the electron.