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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
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Arrange N, O and S in order of decreasing electron affinity
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Correct option: A
S > O > N
Option A (S > O > N) is correct because electron affinity generally increases across a period and decreases down a group, but oxygen has a lower electron affinity than sulfur due to its smaller size and higher electron density.
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