The property of halogens which is not correct | vedclass

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Question

(C) Down the group,electron gain enthalpies become less negative with the increase in the size of the halogen. However,the electron gain enthalpy of $

Vedclass · Accepted Answer

$F > Cl > Br > I$ (Electron gain enthalpy)

Vedclass · Answer

(C) Down the group,electron gain enthalpies become less negative with the increase in the size of the halogen. However,the electron gain enthalpy of $F$ is less negative than $Cl$. This is due to the small size of the $F$-atom. As a result,there are strong inter-electronic repulsions in the relatively small $2p$-orbitals of $F$,and thus incoming electrons experience much less attraction. Thus,the correct order is $Cl > F > Br > I$. Therefore,the option $F > Cl > Br > I$ for electron gain enthalpy is incorrect.

The property of halogens which is not correctly matched is

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