Question

what is Radioactivity?
-Pihu Roy｡◕‿◕｡​

Answer 1

Radioactive decay is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay, beta decay, and gamma decay, all of which involve emitting one or more particles or photons.

-Aditya Singh Rajput ✌️｡◕‿◕｡

Answer 2

Hlo here is your answer

Explanation:

Radioactivity is the spontaneous emission of radiation in the form of particles or high energy photons resulting from a nuclear reaction. ... A substance that contains unstable atomic nuclei is considered to be radioactive. Radioactive decay is a random or stochastic process that occurs at the level of individual atoms.