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JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Self Evaluation Test - The s-Block Elements

  • question_answer
    The mobility of metal ions in aqueous medium \[(L{{i}^{+}},N{{a}^{+}},{{K}^{+}},R{{b}^{+}})\] in the electric field, follows the order

    A) \[L{{i}^{+}}>N{{a}^{+}}>{{K}^{+}}>R{{b}^{+}}\]

    B) \[R{{b}^{+}}>N{{a}^{+}}={{K}^{+}}>L{{i}^{+}}\]

    C) \[L{{i}^{+}}<N{{a}^{+}}<{{K}^{+}}<R{{b}^{+}}\]

    D) \[N{{a}^{+}}={{K}^{+}}>R{{b}^{+}}>L{{i}^{+}}\]    

    Correct Answer: C

    Solution :

    [c] Down the group with decrease in positive charge tendency to get hydrated decreases and hence the size of hydrated ion decreases. Thus mobility increases.


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