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JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Mock Test - Classification Elements Periodicity Properties

  • question_answer
    The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing power of the cationic species,\[{{K}^{+}},C{{a}^{2+}},M{{g}^{2+}}\] and \[B{{e}^{2+}}\]?

    A)  \[M{{g}^{2+}}\]<\[B{{e}^{2+}}\]<\[{{K}^{+}}\]<\[C{{a}^{2+}}\]

    B)  \[B{{e}^{2+}}\]<\[{{K}^{+}}\]<\[C{{a}^{2+}}\]<\[M{{g}^{2+}}\]

    C)  \[{{K}^{+}}\]<\[C{{a}^{2+}}\]<\[M{{g}^{2+}}\]<\[B{{e}^{2+}}\]

    D)  \[C{{a}^{2+}}\]<\[M{{g}^{2+}}\]<\[B{{e}^{2+}}\]<\[{{K}^{+}}\]

    Correct Answer: C

    Solution :

    [c] Higher the charge/size ratio, larger is the polarizing power. \[\therefore {{K}^{+}}<C{{a}^{2+}}<M{{g}^{2+}}<B{{e}^{2+}}\]


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