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

  • question_answer
    The oxidation number of chromium in sodium tetrafluoro oxochromate complex is

    A) II

    B) IV

    C) VI

    D) III

    Correct Answer: B

    Solution :

      \[N{{a}_{2}}[Cr\,{{F}_{4}}O]\] \[x+4\,(-1)+(-2)=-2\] \[x-6=-2\]Þ\[x=+4\].


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