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J & K CET Medical J & K - CET Medical 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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