JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties Question Bank Valency and oxidation state

  • question_answer Increasing order of acid strength of halogen acid is  [DCE 2000]

    A) \[HF<HCl<HBr<HI\]

    B) \[HCl<HBr<HI<HF\]

    C) \[HF<HI<HBr<HCl\]

    D) None of these

    Correct Answer: A

    Solution :

    As going down the group size increases, an liberation of \[{{H}^{+}}\] ion becomes easy. So the order of acidity is : \[HI>HBr>HCl>HF\]


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