- Number of atoms/unit cell = 3 + 2*0.5 + 12* (1/6) = 6
- Lattice parameter: a = 2r ,c = (√8/√3)a
- Packing factor: APF = 0.74
- The following top view shows the portions of atoms inside and outside the unit cell :
- The following 3D crystal will help you imagine the structure better:
