A radioactive substance does not emit________________?
Correct answer: B. Proton
- A. α-ray
- B. Proton
- C. Position
- D. β-ray
Explanation
Ordinary radioactive decay commonly produces alpha particles, beta particles and gamma radiation, not emitted protons. Positrons, presumably intended by the misspelled option, can also be produced in beta-plus decay, so proton is the best answer.
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