An hexagonal close packing crystal lattice has
Same coordination number as of simple primitive lattice
Same type of voids as of body centered cubic lattice
Same ratio of atoms and voids as of face centered cubic lattice
All of these
- The hexagonal closest packed (hcp) has a coordination number of 12 and contains 6 atoms per unit cell.
- The face-centered cubic (fcc) has a coordination number of 12 and contains 4 atoms per unit cell.
- The body-centered cubic (bcc) has a coordination number of 8 and contains 2 atoms per unit cell.
- The simple cubic has a coordination number of 6 and contains 1 atom per unit cell.
There are 8 tetrahedral voids per cell and 4 octahedral voids per cell in hcp.
So answer is B