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NEET Sample Paper NEET Sample Test Paper-42

  • question_answer
    Which is the correct order of increasing enthalpy of vaporisation?

    A) \[{{\operatorname{NH}}_{3}}<P{{H}_{3}}<AS{{H}_{3}}\]

    B)   \[{{\operatorname{ASH}}_{3}}<P{{H}_{3}}<N{{H}_{3}}\]

    C) \[{{\operatorname{PH}}_{3}}<AS{{H}_{3}}<N{{H}_{3}}\]

    D) \[{{\operatorname{NH}}_{3}}<AS{{H}_{3}}<P{{H}_{3}}\]

    Correct Answer: C

    Solution :

    There are covalent hydrides. Their thermal stability, decreases from Li to Cs.


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