JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank General Characteristics

  • question_answer
    Which of the following element does not show variable valency [MP PMT 2003]

    A) Ni

    B) Zn

    C) Cu

    D) Mn

    Correct Answer: B

    Solution :

    The electronic configuration of \[Zn\] is \[(Ar)3{{d}^{10}}4{{s}^{2}}\]. Hence due to complete d-subshell, it does not show variable valency.


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