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CMC Medical CMC-Medical Ludhiana Solved Paper-2007

  • question_answer
    The magnetic moment of a transition metal ion is found to be 3.87 BM. The number of unpaired electrons, present in it is

    A)  2                                            

    B)  3   

    C)  4                                            

    D)  5

    Correct Answer: B

    Solution :

                    Magnetic moment,\[{{\mu }_{eff}}=3.87\]BM corresponds to the number of unpaired electrons, n = 3 by applying the formula. \[{{\mu }_{eff}}=\sqrt{n\,(n+2)}BM\]for \[n=1,\] \[\mu =1.73\]BM; for \[n=2,\]\[\mu =2.83\]BM for \[n=3,\] \[\mu =3.87\]BM and so on.


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