KVPY Sample Paper KVPY Stream-SX Model Paper-5

  • question_answer
    The correct order of hydration enthalpies of alkali metal is :

    A) \[Li>N{{a}^{+}}>{{K}^{+}}>R{{b}^{+}}>C{{s}^{+}}\]

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

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

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

    Correct Answer: A

    Solution :

    \[L{{i}^{\oplus }}\] having minimum radius so maximum hydration radii.


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