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

  • question_answer Which one of the following is the smallest in size [IIT 1989]

    A) \[{{N}^{3-}}\]

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

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

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

    Correct Answer: D

    Solution :

      \[N{{a}^{+}}<{{F}^{-}}<{{O}^{2-}}<{{N}^{3-}}\] All are isoelectronic, effective number charge is highest for \[N{{a}^{+}}\] so it has smallest size.

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