Question

(15 marl
What is meant by Radioactivity? Name natural as well as artificial radioactive element​

Answer 1

Answer:

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.

Explanation:

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Answer 2

Answer:

Radio activity

Explanation:

as its name implies Radio activity is the act of emitting radiation spontaneously.