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Read assertion and reason carefully to m...

Read assertion and reason carefully to mark the correct option.
Assertion: Heavy nuclides tend to have more number of neutrons than protons.
Reason: In heavy nuclei, as there is coulomb repulsion between protons, so excess of neutrons are preferable.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

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