Question

Define the activity of a given radioactive substance. Write it's SI unit.

Answer 1

❥Bonjour!!

The activity of any radioactive substance is to produce radioactive radiations like alpha, beta and gamma.

There are charges present on these radiations.

As these rays are called Bacquerel rays,

the S. I unit is Bacquerel.

♡тнαηк уσυ!♡

Answer 2

Explanation:

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.