Which of the following exhibits the highest boiling point?

a. Ne, Ar, Kr, or Xe? Xe
b. HF, HCl, HBr, or HI? HI
c. CH3CH3, CH3COOH, or CH3OCH3? CH3COOH
d. F2, Cl2, Br2, or I2? I2
e. NaCl, SO2, or N2? SO2

Are these right? I just went by molar mass. If these are wrong, please explain how to figure these out. Thanks