Radioactivity is the spontaneous decay of the nucleus of the atom of an element during which it emit alpha particle, beta particle or gamma ray or a combination of any or all the three with the release of heat as energy.
RADIOACTIVITY
The word radioactivity emanated from two words
Radiation means emission while activity is the rate at which radioactive source decay.
What is Radioactivity ?
Radioactivity is the spontaneous decay of the nucleus of the atom of an element during which it emit alpha particle, beta particle or gamma ray or a combination of any or all the three with the release of heat as energy.
Learn more about Radioactivity here: https://brainly.com/question/2320811
