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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

The correct Answer is:
B
`beta`-particle carries one unit of negative charge, and `alpha`-particle carries 2 unit of positive charge and `gamma`-particle carries no charge, therefore electronic energy levels of the atom charges for `alpha and beta`-decay but not for `gamma`-decay.
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  2. Identify the correct statement given below.

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  14. Boron rods are used in nuclear reactors because

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  18. An atom of mass number 15 and atomic number 7 captures an alpha-partic...

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  19. The binding energies of the nuclei A and B are E(alpha)and E(alpha) re...

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