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

  • question_answer
    Oxidation number of \[P\]in \[M{{g}_{2}}{{P}_{2}}{{O}_{7}}\]is [CPMT 1989; MP PMT 1995]

    A) + 3         

    B) + 2

    C) + 5         

    D) - 3

    Correct Answer: C

    Solution :

    \[\overset{\,\,\,*}{\mathop{M{{g}_{2}}{{P}_{2}}{{O}_{7}}}}\,\]            \[4+2x-2\times 7=0\];\[2x=14-4=10\]                 \[2x=10\];  \[x=\frac{10}{2}=+\,5\].


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