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Manipal Engineering Manipal Engineering Solved Paper-2012

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

    A) \[-1\]                                    

    B) \[-3\]

    C) \[+1\]                   

    D)        \[+3\]

    Correct Answer: A

    Solution :

    \[K[Co{{(CO)}_{4}}]\]                 \[+1+x+0\times 4=0\] \[\therefore \]                        \[x=-1\]


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