A radio isotope will not emit

Options

A. Gamma and alpha rays simultaneously
B. Gamma rays only
C. Alpha and beta rays simultaneously
D. Beta and gamma rays simultaneously

Answer

B, C

Explanation

It is believed that when an `alpha` or `beta`-particle is emitted, the nucleus becomes excited, i.e., has higher energy and emits the excess energy in the form of radiation which form `gamma` -rays. But `alpha` and `beta` rays are not emitted simultaneously.