As the intermolecular space increases, the intermolecular force decreases.
Definition of Inter-molecular force
Definition of Inter-molecular space
Relation Between Inter-molecular force & Inter-molecular space
Explanation
Therefore when kinetic energy increases among particles the particles vibrate more vigorously, and collision increases with neighboring particles as well as with the wall of containers and thus resulting in an increase in interparticle distance and a decrease in the strength of intermolecular forces.