Primitive Cubic BCC Complete the following table. The primitive cubic row has been completed as an example. FCC Lattice Hard-sphere model Spheres Bravais Unit Cell points Coordination per unit per unit cell number cell 1 1 6 ao HCP C= a= a0= Lattice parameter(s) in terms of R Unit cell volume in terms of R³ Atomic packing Factor a0=2R 8R3 0.5236