MCQ
Viscosity is very low for?
- A$Ar$
- B$Xe$
- ✓$He$
- D$Kr$
✓
Answer
Correct option: C.
$He$
Noble gases have low melting and boiling point and lowest boiling point among them is of $He\ (4.2K).$ This is because they have only type of inter$-$atomic interaction that is weak dispersion forces.
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