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NEET NEET SOLVED PAPER 2015 (Re)

  • question_answer
    The variation of the boiling point of the hydrogen halides is in the order \[HF>HI>HBr>HCl\]. What explains the higher boiling point of hydrogen fluoride?                                                                         

    A)  The electronegativity of fluorine is much higher than for other elements in the group

    B)  There is strong hydrogen bonding between HF molecules

    C)  The bond energy of HF molecules is greater than in other hydrogen halides

    D)  The effect of nuclear shielding is much reduced in fluorine which polarizes the HF molecule

    Correct Answer: D

    Solution :

    Since, there is a strong hydrogen bonding between HF molecules. Hence, boiling point is highest for HF. \[HF\text{ }>\text{ }HI\text{ }>\text{ }HBr\text{ }>\text{ }HI\]


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