BCECE Medical BCECE Medical Solved Papers-2006

  • question_answer
    Which of the following has largest ionic radius?

    A)  \[C{{s}^{+}}\]

    B)  \[L{{i}^{+}}\]

    C)  \[N{{a}^{+}}\]

    D)  \[{{K}^{+}}\]

    Correct Answer: A

    Solution :

    Atomic and ionic radii increase from top to bottom in a group due to the inclusion of another shell at every step. Hence, \[C{{s}^{+}}\] ion will be the largest among given IA group ions (\[N{{a}^{+}},\,L{{i}^{+}}\]and \[{{K}^{+}}\]).


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