All of the following are interparticle forces that exist in different types of molecular compounds.
Which of the interparticle forces exists in every molecular species?
London dispersion forces.
The correct option is A London dispersion forces.
London dispersion forces or vanderwaal forces exist in every molecular species whether species is gas / liquid / solid .These are weakest forces. It exist in every molecule whether polar or non polar. Example $$HCL$$ , $$H_2$$, $$N_2$$ all have vanderwaal forces depend on mass.