Why chlorine have maximum electron gain enthalpy?

1.	Why chlorine have maximum electron gain enthalpy?
Answer» The negative electron gain enthalpy of fluorine is less than that of chlorine. It is due to small size of fluorine atom. As a result, there are strong interelectronic repulsions in the relatively small 2p orbitals of fluorine and thus, the incoming electron does not experience much attraction.

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