The alpha particles are compact clusters of______________?
Correct answer: B. Two Protons and two Neutrons
- A. Electron and Proton
- B. Two Protons and two Neutrons
- C. Three protons and three Neutrons
- D. None
Explanation
An alpha particle is the nucleus of a helium-4 atom, containing two protons and two neutrons. It has no electrons, so the first option describes a different combination.
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