NEET Chemistry NEET PYQ-Alkali Metals

  • question_answer
    The correct order of the mobility of the alkali metal ions in aqueous solution is:           [AIPMT (S) 2006]

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

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

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

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

    Correct Answer: D

    Solution :

    [d] The correct order of the mobility of the alkali metal ions in aqueous solutions. Rb+ > K+ > Na+ > Li+ due to following order of hydration energy of these ions Li+ > Na+ > K+ > Rb+ and due to hydration of ion, mobility decreases.


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