Intermolecular dispersion forces and Chemical Bonding

https://en.wikipedia.org/wiki/Chemical_bond

https://www.theochem.ru.nl/~pwormer/Knowino/knowino.org/wiki/Intermolecular_forces.html
https://en.wikipedia.org/wiki/Exchange_interaction

https://en.wikipedia.org/wiki/London_dispersion_force

While the London dispersion force between individual atoms and molecules is quite weak and decreases quickly with separation (R) like $ \sim \frac {1}{R^{6}}$

in condensed matter (liquids and solids), the effect is cumulative over the volume of materials,[5] or within and between organic molecules, such that London dispersion forces can be quite strong

..Eqn (86)...between two bulk solids decreases by $ \sim \frac {1}{R^{3}}$ where R is the separation between them. The effects of London dispersion forces are most obvious in systems that are very non-polar

in amorphous solids

the dominant contribution to inter-SRO interactions arise from quantum induced instantaneous dipole-induced dipole interactions (referred as dispersion forces in short) and caused by a correlated movements of electrons in interacting molecules. In an attempt to avoid each other at short intermolecular distances, a redistribution of electrons that belong to different molecules leads to formation of instantaneous dipoles that attract each other