Which has highest electron gain enthalpy between chlorine and fluorine and why?

Even though Fluorine has the highest electronegativity among all the elements and it should have the highest electron gain enthalpy among all the halogens but

this is an exception and chlorine has higher electron gain enthalpy than Fluorine.

The reason for this is that the size of Fluorine atom is very small and hence there is very high inter-electronic repulsion among the electrons of fluorine.

This makes incoming of another electron not very favourable.

Even though fluorine has large negative electron gain enthalpy but for chlorine its even more negative.