Which forces of attraction are responsible for liquefaction of `H_(2)`?

Which are responsible for liquefaction of H_(2) -

Which forces of attraction are responsible for liquification of hydrogen chloride

Which interactions are responsible for the liquefaction of helium gas?

Which interactions are responsible for the liquefaction of helium gas?

The strong intermolecular forces of attraction are responsible for high rigidity of solids.

What are the two factors responsible for the liquefaction of gases ?

Intermolecular forces of attraction are more in

Is the force of attraction or repulsion responsible in the interatomic or intermolecular potential for the formation of a solid ? Explain it.