Answer:
London dispersion < hydrogen bonds< covalent bonds< ionic interactions
Step-by-step explanation:
Molecules interact with each other in each of the states of matter. The extent and type of intermolecular interaction exhibited by a substance depends on the nature of bonding between the atoms of the substance.
Intermolecular interactions determine important properties of a substance such as melting and boiling points, polarity etc.
The order of increasing interaction is;
London dispersion < hydrogen bonds< covalent bonds< ionic interactions