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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 phosphorus in \[Ba{{({{H}_{2}}P{{O}_{2}})}_{2}}\] is [Kurukshetra CEE 1998; DCE 2004]

    A) - 1         

    B) + 1

    C) + 2         

    D) + 3

    Correct Answer: B

    Solution :

    \[Ba{{({{H}_{2}}\overset{*}{\mathop{P}}\,{{O}_{2}})}_{2}}\]; \[Ba{{H}_{4}}\overset{*}{\mathop{{{P}_{2}}}}\,{{O}_{4}}\]            \[2+4+2x-8=0\];  \[2x=2\]                                 \[x=\frac{2}{2}=+1\].


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