Question

What is radioactivity?

Answer 1

Here, hi

Here is ur answer

The emission of ionising radiation or particles caused by the spontaneous disintegration of atomic nuclie is called radioactivity

Answer 2

Hi friend..

Here is ur answer⤵

Radioactive decay occurs in unstable atomic nuclei – that is, ones that don’t have enough binding energy to hold the nucleus together due to an excess of either protons or neutrons.
It comes in three main types – named alpha, beta and gamma for the first three letters of the Greek alphabet.
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