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Periodic Classification of Elements
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Assertion (A) Fluorine has a less negative electron affinity than chlorine.Reason (R) There is relatively greater effectiveness of 2p-electrons in the small F atom to repel the additional electron entering theatom than to 3p-electrons in the larger Cl atom.
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A
Both (A) and (R) are true and (R) is the correct explanation of (A).
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