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GK QUESTION#3159

Consider the following statements: 1. Ernest Rutherford used gold foil approximately 1000 atoms thick for his alpha scattering experiment. 2. The experiment showed that atoms are mostly empty space with a dense nucleus at the center. 3. Rutherford used beta particles instead of alpha particles in the experiment. Which of the statements given above is/are correct?

  1. A1 and 3 only
  2. B2 and 3 only
  3. C1 and 2 onlyCorrect answer
  4. D1, 2 and 3
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Answer

C. 1 and 2 only

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Explanation

The experiment used alpha particles and very thin gold foil. Most particles passed through while a small fraction were strongly deflected, supporting mostly empty atomic volume and a small dense nucleus. It did not use beta particles. The roughly 1000-atom thickness is the school-text description rather than an exact universal foil specification.

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