Ncert Exercises & Solutions

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

1.	do not change for any type of radioactivity
2.	change for \(\alpha\) and \(\beta\text-\)radioactivity but not for \(\gamma\text-\)radioactivity
3.	change for \(\alpha\text-\)radioactivity but not for others
4.	change for \(\beta\text-\)radioactivity but not for others