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

  • question_answer Which one of the following ions has the highest value of ionic radius   [AIEEE 2004]

    A) \[{{O}^{2-}}\]

    B) \[{{B}^{3+}}\]

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

    D) \[{{F}^{-}}\]

    Correct Answer: A

    Solution :

    \[{{O}^{-2}}\] has the highest value of ionic radii as this can be explained on the basis of \[Z/e\,\,\left\{ \frac{\text{Nucleaus charge}}{\text{No}\text{. of electron}} \right\}\] Whereas Z / e ration increases, the size decreases and when Z / e ration decreases the size increases.

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