Helium has the lowest boiling point due to . | vedclass

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(D) Helium $(He)$ has the lowest boiling point $(4.2 \ K)$ among all known substances. This is because helium atoms are very small and have a very sta

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Weak van der Waals forces between atoms

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(D) Helium $(He)$ has the lowest boiling point $(4.2 \ K)$ among all known substances. This is because helium atoms are very small and have a very stable electronic configuration $(1s^2)$. Due to this,the interatomic forces of attraction,known as van der Waals forces,are extremely weak. These weak forces are easily overcome by thermal energy,resulting in a very low boiling point.

Column-$I$	Column-$II$
$(a) XeF_6$	$(i) \text{ Distorted Octahedral}$
$(b) XeO_3$	$(ii) \text{ Square planar}$
$(c) XeOF_4$	$(iii) \text{ Pyramidal}$
$(d) XeF_4$	$(iv) \text{ Square pyramidal}$

Helium has the lowest boiling point due to . . . . . . .

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