Question

Assertion (A): F atom has less electron affinity than Cl atom.

Reason (R): Addition electrons are repelled more effectively in Cl atom.

Options

• If both A and R are true, and R is the correct explanation of A.

• If both A and R are true, but R is not the correct explanation of A.

• If A is true, but R is false.

• If both A and R are false.

Answer 1

If A is true, but R is false.

Explanation:

The fluorine atom has a lower electron affinity than the chlorine atom because its exceptionally small atomic size creates a crowded valence shell. This compact space causes incoming electrons to experience strong inter-electronic repulsion in fluorine, whereas chlorine's larger orbital accepts electrons much more easily with less repulsion. Therefore, the assertion is entirely true, but the reason stating that chlorine has higher repulsion is completely false.