The binding energy per nucleon, for nuclei with atomic mass number `A gt 100`, decreases with `A`.
The nuclear forces are weak for heavier nuclei.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
B. if both assertion and reason are true but reason is not the correct expalanation of the assertion
C. if assertion is true , but reason is false
D. both assertion and reason are false statements.

Answer

B

Explanation

The decreases is binding energy per nucleon for heavy nuclie `(Agt100)` due to increas3s in coulomb repulsion between the protons inside the nucleus.