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  4. The correct order of electron affinities of N, O, S and Cl is

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Q. The correct order of electron affinities of $N, O, S$ and $Cl $ is

AFMCAFMC 2009Classification of Elements and Periodicity in Properties

Solution:

Electron affinity is the tendency is attract shared pair of electron towards itself. Its value decreases in a group and increases in a period. The correct order of electron affinities is as follows $N< O< S< Cl$.