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VMMC VMMC Medical Solved Paper-2012

  • question_answer
    For which of the following metals, the electronic configuration of valence shell is not\[{{d}^{6}}\]?

    A)  Fe (II)            

    B)  Mn (II)

    C)  Co (III)           

    D)  Ni (IV)

    Correct Answer: B

    Solution :

    [a] \[Fe=[Ar]3{{d}^{6}},4{{s}^{2}}\] \[F{{e}^{2+}}=[Ar]3{{d}^{6}}\] [b] \[Mn=[Ar]3{{d}^{5}},4{{s}^{2}}\] \[M{{n}^{2+}}=[Ar]3{{d}^{5}}\] [c] \[Co=[Ar]3{{d}^{7}},4{{s}^{2}}\] \[C{{o}^{3+}}=[Ar]3{{d}^{6}}\] [d] \[Ni=[Ar]3{{d}^{8}},4{{s}^{2}}\] \[Ni=[Ar]3{{d}^{6}}\] Therefore, the valence shell electronic configuration of Mn (II) is not \[{{d}^{6}}.\]


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