Physics 5054 · O Level · The nuclear model of the atom

The nuclear model of the atom — practice question

In the Geiger-Marsden experiment, alpha-particles are directed at a thin gold sheet. The majority of alpha-particles travel straight through the thin gold sheet. A small number are deflected. What may be inferred from this experiment?

  • AThe nucleus is very small.
  • BThe nucleus has no charge.
  • CElectrons surround the nucleus.
  • DElectrons have a negative charge.

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