[bmu123]

Estimate the energies of interaction at 25 °C between (i) two hydrogen molecules and (ii) two nitrogen molecules, if each pair is separated by 0.3 nm. Explain fully and clearly your reasoning and any assumptions you make in your answer. State the source of the values of any molecular properties you use in your calculation.

Would I use the London dispersion force equation for this?
V = -3/4 α²I/r⁶

If so, I have 1312 kJ for the first ionisation energy for hydrogen, is this OK to use or so I need one specifically for a hydrogen molecule? Does anyone know where I can find values for polarisability? Thanks