For a given crystal structure, say body centred cubic, on what factors does surface energy of each plane depend? A basic approach considers the atomic density on each crystallographic plane, the number of bonds broken if the surface is cleaved along that plane and combines these two.
Is this a realistic and reasonable approach if I want to compare the surface energies of two crystallographic planes, say (100) and (111)? What are the other factors, if any, that should be included in the comparison?
Edit : Background : My problem related to the wettability of a crystal surface by a liquid. The contact angle that the liquid makes with the crystal surface is determined by the interfacial energies between solid-liquid, liquid-vapour and solid-vapour. Keeping all other factors, I only change the nature of the solid crystal surface, by presenting a different crystallographic plane. I would like to theoretically estimate which crystallographic plane would have the highest energy, and which would have the lowest, so that a prediction can be made about the extent of wettability of the surface.