Question

what is radioactivity​

Answer 1

Answer:

Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, or a gamma ray or electron in the case of internal conversion

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Answer 2

Answer:

radioactivity is a thing which heats up a object without any medium

Explanation:

or

radioactivity is a thing which is a sound wave tech

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