Question

what is radio active?​

Answer 1

Answer:

radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei. ... Radioactive decay is a property of several naturally occurring elements as well as of artificially produced isotopes of the elements.

Step-by-step explanation:

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Answer 2

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.