Question

In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells:-

• A. 6
• B. 8
• C. 4
• D. 2

Answer 1

The correct option is A 6

All the faces of the face-centered unit cell are shared by 6 unit cells.
4 face are covered by 4 unit cells as shown in figure. The front and back face are also covered by 2 unit cell.
$\Rightarrow$ Total of 6 unit cells