Question

Define radioactivity with examples.

& State different types of radiations emitted by radioactive substance.​

Answer 1

Answer:

the property possessed by some elements (such as uranium) or isotopes (such as carbon 14) of spontaneously emitting energetic particles (such as electrons or alpha particles) by the disintegration of their atomic nuclei also : the rays emitted.

There are four major types of radiation: alpha, beta, neutrons, and electromagnetic waves such as gamma rays. They differ in mass, energy and how deeply they penetrate people and objects. ... Many of the naturally occurring radioactive materials in the earth, like uranium and thorium, emit alpha particles.