Periodic Table and Periodicity

Question

The absolute value of the electron gain enthalpy of halogens satisfies :

Accepted Answer

Option B. The magnitude of electron gain enthalpy of halogen
atoms down the group show abnormal behavior.
The |ΔH_eg| of F is lower than that of Cl due to its
smaller size. The incoming electron experiences
higher repulsive force due to valence electrons of
F than Cl. The correct order is Cl > F > Br > I.

More on Periodic Table and Periodicity

Periodic Table and Periodicity

More on Periodic Table and Periodicity