MHT CET Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesMHT CET

The order of electron affinity of B, C, N and O is

Answer: (B)

Solution

Electron affinities (kJ molMissing superscript or subscript argument^-1$ released) are about O 141, C 122, B 27 and N nearly zero (half-filled stable 2p^3$ shell

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Question ID VK-070853