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  3. J & K CET Engineering

J & K CET Engineering J and K - CET Engineering Solved Paper-2005

  • question_answer
    The oxidation number of cobalt in \[K[Co{{(CO)}_{4}}]\]is

    A) \[+\,1\]          

    B) \[+\,3\]

    C) \[~-1\]           

    D) \[-3\]

    Correct Answer: C

    Solution :

     Let the oxidation number of cobalt is \[x\]in \[K[Co{{(CO)}_{4}}].\] \[1+x+0=0\] \[x=-1\]


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