In class, we have figured out the surface energy of different crystal planes in the FCC crystal using the equation = 2 , where is bond energy, is the number of broken bonds per surface atom, is the density of surface atoms. - By the same token, figure out the surface energy of different crystal planes of (100), (110), and (111) in the BCC crystal (lattice parameter of a) in the expression of and a. - Compare their surface energy and list them from large to small