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VMMC VMMC Medical Solved Paper-2004

  • question_answer
    Oxidation state of iron in \[\text{F}{{\text{e}}_{\text{3}}}{{\text{O}}_{\text{4}}}\]is

    A)  \[\frac{8}{3}\]              

    B)                         \[\frac{3}{4}\]                  

    C)  \[\frac{3}{2}\]                  

    D)         \[\frac{1}{2}\]

    Correct Answer: A

    Solution :

    Let \[x\]the oxidation number of Fe in \[\text{F}{{\text{e}}_{\text{3}}}{{\text{O}}_{\text{4}}}\text{.}\] Therefore \[3x+4\times (-2)=0\]                 or                            \[3x=8\]                 or                            \[x=\frac{8}{3}\]


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