The correct order of electron affinity of B, | vedclass

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Question

(C) The correct order of electron affinity is $O > C > B > N$. In the periodic table,electron affinity generally increases from left to right across a

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$O > C > B > N$

Vedclass · Answer

(C) The correct order of electron affinity is $O > C > B > N$. In the periodic table,electron affinity generally increases from left to right across a period. However,Nitrogen $(N)$ has a stable half-filled $p$-orbital configuration $(2s^2 2p^3)$,which makes it very difficult to add an electron,resulting in a very low (near zero) electron affinity. Therefore,the order is $O (141 \ kJ/mol) > C (122 \ kJ/mol) > B (83 \ kJ/mol) > N (0 \ kJ/mol)$.

The correct order of electron affinity of $B, C, N, O$ is

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