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AMU Medical AMU Solved Paper-2015

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

    A)  +1                                         

    B)  +2

    C)  - 1         

    D)  - 3

    Correct Answer: C

    Solution :

                     Suppose that the oxidation number of cobalt is x. Then, \[+1+x+4\times 0=0\] or                            \[x+1=0\] or                                            \[x=-1\] Thus, \[K[Co{{(Co)}_{4}}]\]                                


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