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JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank Oxidation number and Oxidation state

  • question_answer
    The oxidation number of \[Mn\]in \[N{{O}_{2}}\]is                                                 [CPMT 1982, 83; EAMCET 1992, 93; RPET 1999]

    A) + 7         

    B) - 7

    C) + 1         

    D) - 1

    Correct Answer: A

    Solution :

    \[\overset{*\,\,\,}{\mathop{KMn{{O}_{4}}}}\,\]                 \[1+x-2\times 4=0\]; \[x=8-1=+7\].


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