Vapour pressure is related inversely with boiling point. Lower the boiling point, higher will be the vapour pressure. Out of the four bromoalkanes, CH3Br has the lowest boiling point.
The intermolecular attraction among CH3Br molecules is very low, because of its low dipole moment.
Hence, the correct answer is
monobromomethane, CH3Br.
Question 8 (1 point) Methane can undergo a series of reactions to replace each hydrogen with...