Question:
In the cubic close packing, the unit cell has ________.
(i) 4 tetrahedral voids each of which is shared by four adjacent unit cells.
(ii) 4 tetrahedral voids within the unit cell.
(iii) 8 tetrahedral voids each of them which are shared by four adjacent unit
cells.
(iv) 8 tetrahedral voids within the unit cells.
Solution:
Option (iv) 8 tetrahedral voids within the unit cells is the answer.