The electron affinities of halogens are F = 3 | vedclass

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Question

(A) The electron affinity of $Cl$ $(349 \ kJ \ mol^{-1})$ is higher than that of $F$ $(322 \ kJ \ mol^{-1})$. This is because the $2p$ subshell of $F$

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Weaker electron-electron repulsion in $Cl$

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(A) The electron affinity of $Cl$ $(349 \ kJ \ mol^{-1})$ is higher than that of $F$ $(322 \ kJ \ mol^{-1})$. This is because the $2p$ subshell of $F$ is very small,leading to strong inter-electronic repulsion when an incoming electron is added. In contrast,the $3p$ subshell of $Cl$ is larger,which results in weaker electron-electron repulsion,making the addition of an electron more favorable.

The electron affinities of halogens are $F = 322$,$Cl = 349$,$Br = 324$,$I = 295 \ kJ \ mol^{-1}$. The higher value for $Cl$ as compared to that of $F$ is due to

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