The correct order of electron affinity is:

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(B) Electron affinity is the energy released when an electron is added to a neutral gaseous atom. Generally,electron affinity increases across a perio

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$N < O < S < Cl$

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(B) Electron affinity is the energy released when an electron is added to a neutral gaseous atom. Generally,electron affinity increases across a period and decreases down a group. However,due to small size and inter-electronic repulsion,the electron affinity of $O$ is less than $S$,and $N$ has a very low (near zero) electron affinity due to its stable half-filled $2p^3$ configuration. Thus,the correct order is $N < O < S < Cl$.

List-$I$ (Element)	List-$II$ (Electron gain enthalpy in $kJ \ mol^{-1}$)
$(A)$ $F$	$(I)$ $-141$
$(B)$ $Cl$	$(II)$ $-328$
$(C)$ $O$	$(III)$ $-200$
$(D)$ $S$	$(IV)$ $-349$

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Match the following elements in List-$I$ with their respective electron gain enthalpy values in List-$II$:
List-$I$ (Element) List-$II$ (Electron gain enthalpy in $kJ \ mol^{-1}$)
$(A)$ $F$ $(I)$ $-141$
$(B)$ $Cl$ $(II)$ $-328$
$(C)$ $O$ $(III)$ $-200$
$(D)$ $S$ $(IV)$ $-349$

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