Electron affinity is the lowest for

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(A) The electron affinity of an element is the energy released when an electron is added to a neutral gaseous atom. Nitrogen $(N)$ has a stable half-f

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Nitrogen

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(A) The electron affinity of an element is the energy released when an electron is added to a neutral gaseous atom. Nitrogen $(N)$ has a stable half-filled $2p^3$ electronic configuration $(1s^2 2s^2 2p^3)$. Due to this stable configuration,the addition of an extra electron is energetically unfavorable,resulting in a very low (or slightly negative) electron affinity value compared to other elements in the same period like Carbon $(C)$ and Oxygen $(O)$. Therefore,among the given options,Nitrogen has the lowest electron affinity.

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