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When a nucleus in an atom undergoes a ra...

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

A

do not change for any type of 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.

Text Solution

Verified by Experts

An a-particle carries 2 units of positive charge and a `beta` -particle carries one unit of negative charge. Therefore, the electronic energy levels for `alpha` and `beta` radioactivity will change. On the other hands, `gamma` -rays has no charge. So, there is no change of `gamma` -radioactivity.
The correct option is (b).
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