. Explain Interatomic and Intermolecular forces
Atoms and molecules of matter are held together by interatomic or intermolecular forces.
They are electrical in nature and hence can be attractive or repulsive. The mutual potential energy (U) corresponding to this force between two molecules or atoms as a function of their separation(r) is shown. The corresponding force between two molecules
The potential energy is a minimum at the equilibrium separation r0, at which point the force is zero. As the separation (r) decreases, the attractive force first increases and then decreases to zero at r = r0.
For smaller distances force is repulsive.