Electron gain enthalpy of fluorine (F) is less negative than that of chlorine (Cl). Why ?
Electron gain enthalpy of fluorine (F) is less negative than that of chlorine (Cl). Why ?
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[Hint : Due to small size of F atom and compact 2p orbitals there are strong interelectronic repulsions in the relatively smaller 2p orbitals of fluorine. So the incoming electron does experience more repulsion in F than in Cl.]
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