Write down 5 characteristics that signifies the crystal stru

Solution

n, number of atoms per unit cell. For an atom that is shared with m adjacent unit cells, we only count a fraction of the atom, 1/m. CN, the coordination number, which is the number of closest neighbors to which an atom is bonded. APF, the atomic packing factor, which is the fraction of the volume of the cell actually occupied by the hard spheres. APF = Sum of atomic volumes/Volume of cell. cell dimensions (side a in cubic cells, side of base a and height c in HCP) in terms of R Miller Indices (Planes in a crystal are described by notations called Miller indices).