Question

Define the molecular range.

Answer 1

The maximum distance at which an appreciable intermolecular force of attraction exists between two molecules is known as the molecular range or range of molecular attraction.

Answer 2

The maximum distance from a molecule up to which the molecular force is effective is called the range of molecular force. Intermolecular forces are effective up to a distance of the order of few nanometer (10^-9m) in solid and liquids so it is called short range force.