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

  • question_answer
    Variable valency is shown by [MP PMT 1986; AMU 1999]

    A) \[Na\]

    B) \[Cu\]

    C) \[Mg\]

    D) \[Al\]

    Correct Answer: B

    Solution :

      \[Cu\]due to the presence of vacant d-orbital.


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