NEET Chemistry NEET PYQ-Nitrogen Family

  • question_answer
    Which of the following is most acidic? [AIPMT 1999]

    A) \[{{N}_{2}}{{O}_{5}}\]

    B) \[{{P}_{2}}{{O}_{5}}\]

    C) \[A{{s}_{2}}{{O}_{5}}\]

    D) \[S{{b}_{2}}{{O}_{5}}\]

    Correct Answer: A

    Solution :

    [a] Acidic nature of oxides decreases down a group. So \[{{N}_{2}}{{O}_{5}}\] is most acidic.
    Another reason of acidic strength of \[{{N}_{2}}{{O}_{5}}\] is that the electronegativity of N is maximum in die given Vth group elements. As we know that by increasing the electronegative character acidic nature increases.


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