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

  • question_answer A sodium cation has a different number of electrons from

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

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

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

    D) \[A{{l}^{3+}}\]

    Correct Answer: C

    Solution :

      \[N{{a}^{+}}\,-\,10\] electron ; \[L{{i}^{-}}\,-\] 4 electron

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