Explain what type of intermolecular force accounts for the following differences in each case?
1. CH3SH boils at 6 degrees Celsius, CH3OH boils at 65 degrees Celsius.
2. Xe is liquid at atmospheric pressure and 120 K, whereas Ar is gas.
3. Kr, atomic weight 84, boils at 120.9 K, whereas Cl2, molecular weight about 71, boils at 238 K.
4. Acetone boils at 56 degrees Celsius whereas 2-methylpropaneboils at -12 degrees Celsius.