Which of the following has the highest electr | vedclass

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(B) The electron affinity of $Cl$ is the highest among the given elements.Although $F$ is more electronegative than $Cl$,the electron affinity of $F$

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$Cl$

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(B) The electron affinity of $Cl$ is the highest among the given elements.Although $F$ is more electronegative than $Cl$,the electron affinity of $F$ is lower than that of $Cl$.This is because the $2p$ subshell of $F$ is very small,which leads to significant inter-electronic repulsion when an additional electron is added.In contrast,the $3p$ subshell of $Cl$ is larger,allowing the incoming electron to be accommodated with less repulsion,resulting in a more exothermic electron gain enthalpy.

Which of the following has the highest electron affinity?

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