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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Identify the correct order of the size of the following

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Correct option: C

{Ca}^{2+} < {K}^{+} < {Ar} < {Cl}^{-} < {S}^{2-}

Option C is correct because it correctly orders the given isoelectronic species based on their nuclear charge, with more positive charge leading to smaller size.

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