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BHU PMT BHU PMT (Screening) Solved Paper-2007

  • question_answer
    The oxidation number of Fe in\[F{{e}_{3}}{{O}_{4}}\]is 

    A)  \[+8/3\]                             

    B) \[+3/8\]

    C)   \[-8/3\]                             

    D)  \[-3/8\]

    Correct Answer: A

    Solution :

                     Let the oxidation state of Fe is \['x'\] \[F{{e}_{3}}{{O}_{4}}=0\] \[3x+4(-2)=0\] \[3x-8=0\] \[x=\frac{8}{3}\]


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