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

  • question_answer
    The value of x which appears in the complex \[{{\left[ Ni{{\left( CN \right)}_{4}} \right]}^{x}}\] is

    A) + 2

    B) - 2

    C) 0

    D)  4

    Correct Answer: B

    Solution :

      \[{{[\,Ni\,{{(CN)}_{4}}\,]}^{x}}\], \[(\,Ni=+2\,)\]\[(\,CN=-1\,)\] \[x=2+4(-1)\]\[\Rightarrow \]\[x=-2\].


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