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CMC Medical CMC-Medical VELLORE Solved Paper-2009

  • question_answer
    What is the oxidation number of Fe in\[Fe{{(CO)}_{5}}\]?

    A)  + 3                                        

    B)  zero

    C)  + 2                                        

    D)  + 5

    Correct Answer: B

    Solution :

                    Let the oxidation state of Fe in \[Fe{{(CO)}_{5}}\]is x. \[Fe{{(CO)}_{5}}\] \[x+0\times 5=0\]                 \[\therefore \]                 \[x=0\] In metal carbonyls, oxidation state of metal is always zero.


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