When a nucleus in an atom undergoes a radioactive decay, the electronic energy levels of the atom.

Options

A. do not change for any type radioactivity
B. change for `alpha and beta` radioactivity but not for `gamma` radioactivity
C. change for `alpha`-radioactivity but not for others
D. change for `beta`-radioactivity but not for others

Answer

B

Explanation

As an alpha particle carries 2 units of positive charge, and a beta particle carries one unit of negative charge and `gamma`(particle) carries no charge, therefore, electronic energy levels of the atom change for `alpha and beta` decay, but not for `gamma`-particle. Choice (b) is correct.