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BVP Medical BVP Medical Solved Paper-2002

  • question_answer
    Which of the following  isoelcctronic species \[C{{a}^{+2}},\,C{{l}^{-1}},{{K}^{+}}\] and \[{{S}^{-2}}\] has maximum ionic size?

    A)  \[{{K}^{+}}\]                                     

    B)  \[C{{a}^{+2}}\]

    C)  \[C{{l}^{-}}\]                                     

    D)  \[{{S}^{-2}}\]

    Correct Answer: D

    Solution :

                    For isoelectronic species, greater the nuclear charge stronger the attraction for the same number of electrons and smaller the ion. Order of ionic  size,  \[C{{a}^{+2}}<{{K}^{+}}<C{{l}^{-}}<{{S}^{-2}}\].


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