Question

Why electron affinity of chlorine is greater than elect affinity of fluorine?

Answer 1

due to small size of fluorine than chlorine

Answer 2

THE ELECTRON AFFINITY OF CHLORINE IS GREATER THAN OF FLUORINE BECAUSE THE ELECTRON BEING GAINED BY FLUORINE WOULD BE TAKEN INTO A MUCH SMALLER 2P ORBITAL AND REQUIRES MORE COUPLING ENERGY THAN THAT OF MUCH LARGER 3P ORBITAL OF CHLORINE.

HOPE IT HELPS.