What is the relation between intermolecular space and intermolecular force of attraction?
The greater the intermolecular space between the molecules of a substance, the smaller will be the intermolecular force of attraction and vice versa.
For example, The intermolecular force of attraction is weakest in gases as the intermolecular space is highest in gases.
On the other hand, The intermolecular force of attraction is stronger in solids as the intermolecular is minimum in solids.