Final answer:
The weaker the attractive forces between molecules, the more molecules will be in the vapor.
Step-by-step explanation:
The weaker the attractive forces between molecules, the more molecules will be in the vapor. Relatively weak intermolecular attractions present less of a barrier to vaporization and a reduced likelihood of gas recapture, resulting in a relatively high vapor pressure. This means that more molecules are able to escape from the liquid phase and enter the gas phase.