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AMU Medical AMU Solved Paper-2009

  • question_answer
    Increasing order of ionic size for the ions, \[{{F}^{-}},{{O}^{2-}},N{{a}^{+}},A{{l}^{3+}}\] is

    A)  \[{{O}^{2-}}<{{F}^{-}}<N{{a}^{+}}<A{{l}^{3+}}\]

    B)  \[A{{l}^{3+}}<N{{a}^{+}}<{{F}^{-}}<{{O}^{2-}}\]

    C)  \[{{O}^{2-}}<N{{a}^{+}}<{{F}^{-}}<A{{l}^{3+}}\]

    D)  \[A{{l}^{3+}}<{{F}^{-}}<N{{a}^{+}}<{{O}^{2-}}\]

    Correct Answer: B

    Solution :

                     At nodal surface, the electron density is zero.


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