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NEET Sample Paper NEET Sample Test Paper-8

  • question_answer
    Which of the following elements with atomic numbers 25,30, 48 and 80 has the highest vapour pressure at room temperature?

    A)  \[Z=30\]                    

    B)  \[Z=25\]

    C)  \[Z=48\]                    

    D)  \[Z=80\]

    Correct Answer: D

    Solution :

    Due to high ionization enthalpy and weak metallic bonding, element with atomic number 80 i.e. \[Hg\] is a liquid at room temperature and therefore has the maximum vapour pressure at room temperature.


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