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RAJASTHAN ­ PET Rajasthan PET Solved Paper-2003

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

    A)  +5                 

    B)  + 6

    C)  +7                 

    D)  + 4

    Correct Answer: C

    Solution :

     Let the oxidation number of\[Mn\]is\[x\]in\[MnO_{4}^{-}\] \[x+4(-2)=-1\] \[x-8=-1\] \[x=-1+8=4-7\]


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