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

  • question_answer
    The magnetic moment of a metal ion of first transition series is 2.83 \[BM\]. Therefore it will have unpaired electrons

    A) 6

    B) 4

    C) 3

    D) 2

    Correct Answer: D

    Solution :

    \[\mu =\sqrt{n(n+2)}\] (m = magnetic moment) (n = no. of unpaired electron). \[2.83=\sqrt{n(n+2)}\] \[n(n+2)=8\] \[{{n}^{2}}+2n-8=0\] \[n=2\].


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