What is `beta`-decay? What is the consequence of an `beta`-decay on a radioactive element ?

Explanation

A radioactive transformation in which an `beta`-particle is emitted is called `alpha`-decay. In a `beta`-decay, the atomic number of the nucleus increases by 1 and the mass number remains unchanged. In a `beta`-decay, the atomic number of the nucleus decreases by 1 and the mass number remains unchanged.