Determine the kinds of intermolecular forces that are present in each element or compound. o2 nbr3 ch4 hf

O₂ (contain only dispersion force exist as it can't have hydrogen bond or dipole-dipole forces)

NB₃ (polar molecule so it contain dipole-dipole interaction in addition to dispersion force)

CH₄ (Non polar compound and has no hydrogen bond so only dispersion is present)

HF (It can form hydrogen bond because it is polar and contain F which has high electronegativity in addition to dipole-dipole and dispersion)