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JEE Main & Advanced Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Nitrogen Family

  • question_answer
    Oxidation number of As in \[{{H}_{2}}AsO_{4}^{-}\] is [CPMT 2001]

    A) 6

    B) 7

    C) 5

    D) 9

    Correct Answer: C

    Solution :

     Oxidation number of \[As\]in \[{{H}_{2}}AsO_{4}^{-}\] \[2+x-8=-1\] \[x-6=-1\] \[x=5\]


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