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Melting and Boiling point

The lowest bo...

Question

The lowest boiling point of helium is due to its:

A

inertness

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B

gaseous nature

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C

high polarisability

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D

weak Van der Waals forces between atoms

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Solution

The correct option is C weak Van der Waals forces between atoms
Van der Waals forces exist between helium atoms. In general, the heavier the molecule, the stronger the van der Waal's force of interaction. Boiling point depends on van der Waals and molecular mass.
Thus, helium has the lowest boiling point.

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