If the orders of the values of van der waals constants a and b for three gases X, Y and Z are `X lt Y lt Z and Z lt Y lt X` respectively, then-

Options

A. Liquefaction will be easier for gas X than gases Y and Z.
B. the size of the molecule, Y will be in between the sizes of the molecules X and Z
C. the order of the critical temperature of these three gases is: `X lt Y lt Z`
D. the gas Z, at `0^(@)C` and 1 atm will behave most ideally.

Answer

B, C