Question

The critical temperature of gases A, B, C and D are, -118${}^o$C, -240${}^o$C, -10${}^o$ and -20${}^o$C respectively. Arrange them in the decreasing order of intermolecular force of attraction.

Answer 1

The higher the critical temperature, the more is the inter molecular force of attraction and they can be liquefied easily. Decreasing order of intermolecular force of attraction is $C>D>A>B$.