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JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Atomic and lonic radii

  • question_answer
    The decreasing order of size of isoelectronic series \[{{K}^{+}},\,C{{a}^{2+}},\,C{{l}^{-}}\] and \[{{S}^{2-}}\] is [Roorkee 1995]

    A) \[{{K}^{+}}>C{{a}^{2+}}>{{S}^{2-}}>C{{l}^{-}}\]

    B) \[{{K}^{+}}>C{{a}^{2+}}>C{{l}^{-}}>{{S}^{2-}}\]

    C) \[C{{a}^{2+}}>{{K}^{+}}>C{{l}^{-}}>{{S}^{2-}}\]

    D) \[{{S}^{2-}}>C{{l}^{-}}>{{K}^{+}}>C{{a}^{2+}}\]

    Correct Answer: D

    Solution :

    \[{{S}^{2-}}>C{{l}^{-}}>{{K}^{+}}>C{{a}^{2+}}\]


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