Assertion : F atom has a less negative election gain enthalpy than Cl atom.
Reason : Additional electrons are repelled more effectively by 3p electrons in Cl atom than by 2p electrons in F-atom.

Options

A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion
B. If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
C. If Assertion is correct , but Reason is incorrect
D. If both Assertion and Reason are incorrect

Answer

C

Explanation

F has slightly less electrons affinity than chlorine because Fhas very small atomic size (only two shells). Hence there is a tendency of electron-electron repulsion, which results in less evolution of energy in the formation of F ion.