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1 May, 10:46

What is meant by radioactivity? high-energy subatomic particles disintegration of the nucleus unstable atoms all of the above

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  1. 1 May, 13:35
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    Radioactivity is the spontaneous emission of radioactive particles like alpha, beta and gamma whenever an atom is unstable i. e., when the number of neutrons exceeds the number of protons.

    in short, all of the above must be the answer
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