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  5. The p-block Elements-II / p-ब्लॉक तत्व-II

12th Class Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank Case Based (MCQs) - The p Block Elements

  • question_answer
    The correct order of the thermal stability of hydrogen halides (H-—X) is

    A) HI > HBr > HCI > HF

    B) HF > HCI > HBr > HI

    C) HCI > HF > HBr > HI

    D) HI > HCI > HF > HBr.

    Correct Answer: B

    Solution :

    Correct order of thermal stability of hydrogen halides is : H-F > H-CI > H-Br > H-I. This is because with the increase in the size of halogen H—X bond becomes weaker.


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