JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties Question Bank Atomic and lonic radii

  • question_answer Which of the following alkali metal ions has lowest ionic mobility in aqueous solutions  [DPMT 2004]

    A) \[R{{b}^{+}}\]

    B) \[C{{s}^{+}}\]

    C) \[L{{i}^{+}}\]

    D) \[N{{a}^{+}}\]

    Correct Answer: C

    Solution :

    As we know that hydration power decreases on moving down the group hence among alkali metals Li has excessive hydration & hence it has low mobility in aqeous solution.


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