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1.3 What is the surface density of atoms. N5. in terms of the lattice parameter. tie. for (100) and (111) planes in the diamond lattice? 1.9 in a face-centered-cubie crystal with lattice spacing at. what are the interplanar spacings for (100), (110)., and {111) planes? Which has the highest and which has the lowest density of atoms. per centimeter cubed