NEET Sample Paper NEET Sample Test Paper-84

  • question_answer
    The correct order of solubility in water for He, Ne, Ar, Kr, Xe is

    A) He > Ne > Ar > Kr > Xe          

    B) Xe > Kr > Ar > Ne > He

    C) Ne > Ar > Kr > He > Xe

    D) Ar > Ne > He > Kr > Xe

    Correct Answer: B

    Solution :

    [b] As the molecular weight of noble gas atoms increases down the group its polarity increases due to which van-der-waal's force between them increases. Due to increased polarity of heavier inert gas, its solubility in water also increases. So, most soluble gas will be Xe and least soluble will be He. So correct order is \[Xe>Kr>Ar>Ne>\,\,He\]


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