RRB Paramedical Staff Nurse Model Paper 1

In a group of non-metals, electron gain enthalpy of the 2nd element is maximum. Among halogens, chlorine has the highest election affinity
We would expect fluorine would have the highest electron affinity because of being a halogen and very small size, but its so small that it leads to interelectronic repulsions and the overall energy released when an electron is added is reduced.