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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2010

  • question_answer
        Oxidation number of\[Mn\]in\[MnO_{4}^{-}\]ion is

    A)  \[+1\]                                  

    B)  \[-7\]

    C)  \[-1\]                                   

    D)  \[+7\]

    Correct Answer: D

    Solution :

                    Let the oxidation number of\[Mn\]is\[x\]. \[Mn{{O}_{4}}\Rightarrow x+4\times (-2)=-1\]                 \[x-8=-1\]                 \[x=-1+8\]                 \[x=+7\]


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