The interaction energy of London force is inversely proportional to sixth power of the distance between two interacting particles but their magnitude depends upon

Options

A. charge of interacting particles.
B. mass of interacting particles.
C. polarisability of interacting particles.
D. strength of permanent dipoles in the particles.

Answer

C

Explanation

London dispersion forces exist only over very short distance. The energy of interaction varies as `(1)/("(distance between two interactingparticles)"^(6))`
More complex or large are the molecules, higher is the magnitude of London forces. This is due to the fact that the large electron clouds are easily polarised.
Hence, higher the polarisability of interacting particles, higher is the magnitude of the interaction energy.