NEET Sample Paper NEET Sample Test Paper-9

  • 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, \[{{K}^{+}},C{{a}^{2+}},M{{g}^{2+}},B{{e}^{2+}}\]?

    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 :

    Higher the charge/size ratio, more is the polarising power. Hence, the order of polarising power is \[{{K}^{+}}<C{{a}^{2+}}<M{{g}^{2+}}<B{{e}^{2+}}\]

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