The attactive forces between atoms of noble gases are dispersion forces. Inter molecular forces decide the boiling point of a substance. Boiling point of Helium is
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a
4.2K
b
90K
c
77.2K
d
272.7K
answer is A.
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Detailed Solution
The element with least melting and boiling points in the Periodic table is He.BP of He is 4.2K;BP of He