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Question

Which one has the highest boiling point?


A

He

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B

Ne

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C

Kr

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D

Xe

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Solution

The correct option is D

Xe


As we move down the group of noble gases, molecular mass increases by which dipole produced for a moment and hence London forces increase from He to Xe.
Therefore, more amount of energy is required to break these forces, thus boiling point also increases from He and Xe.


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