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JEE Main & Advanced Chemistry Coordination Chemistry Question Bank Nomenclature, Oxidation state and EAN number

  • question_answer
    The oxidation number of \[Pt\] in \[{{[Pt({{C}_{2}}{{H}_{4}})C{{l}_{3}}]}^{-}}\] is [MNR 1993]

    A) + 1

    B) + 2

    C) + 3

    D) + 4

    Correct Answer: B

    Solution :

      \[[\underset{x}{\mathop{Pt}}\,\underset{0}{\mathop{({{C}_{2}}}}\,{{H}_{4}})\underset{-1}{\mathop{C{{l}_{3}}}}\,{{]}^{-}}\] \[x+0+3x(-1)=-1\], \[x-3=-1,\] \[x=+2.\]


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