Question

The electron gain enthalpy of F is less negative than that of the Cl ?explain

Answer 1

Answer:

CL has 17 electrons in its outermost orbit and Fluorine has 7 electrons in outermost orbit.

Explanation:

CL having 17 electrons face screening effect more as compared to Fluorine having 7 electrons hence it is easy to gain one electron by CL than in Fluorine.

It reqiure more energy to add one electron in fluorine

Answer 2

Answer:

Due to its small size, the electron–electron repulsions in the relatively compact 2p-sub-shell are comparatively large, and hence, the incoming electron is not accepted with the same ease as is the case with larger Cl atom. Consequently, electron gain enthalpy of Cl is more negative than that of F.