In which of the following cases will the maxi | vedclass

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(A) The energy released when an electron is added to a neutral gaseous atom is called electron gain enthalpy. $Cl$ has a high electron affinity becaus

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$Cl 	o Cl^-$

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(A) The energy released when an electron is added to a neutral gaseous atom is called electron gain enthalpy. $Cl$ has a high electron affinity because it achieves a stable noble gas configuration $([Ne] 3s^2 3p^6)$ upon gaining one electron. $P$ has a half-filled $p$-orbital,making it relatively stable,so adding an electron is less favorable. $N$ has a half-filled $2p^3$ configuration,which is very stable,making electron addition highly unfavorable (energy is absorbed). $C$ has a $2p^2$ configuration and is less electronegative than $Cl$. Therefore,$Cl$ releases the maximum amount of energy upon electron gain.

In which of the following cases will the maximum energy be released?

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