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The heavier nuclei tend to have larger N...

The heavier nuclei tend to have larger `N//Z` ratio because

A

a neutron is heavier than a proton

B

a neutron is an unstable particle

C

a neutron does not exert electric repulsion

D

Coulomb forces have longer range compared to the nuclear forces.

Text Solution

Verified by Experts

The correct Answer is:
C, D
This is because in heavy nuclei `(N)/(Z)` ratio becomes larger in order to maintain their stabilities and reduce instability caused due to the repulsion among the protons. Neutrons exert only attractive short range force on each other whereas protons exert short range nuclear forces on each other as well as electrostatic repulsive force. Thus, the nuclei with high mass number, in order to be stable, have large neutron to proton ratio (N/Z)
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