Question

In a face centred cubic cell, what is the contribution of an atom at the corner to the unit cell?

• A. $1$
• B. $\frac{1}{2}$
• C. $\frac{1}{4}$
• D. $\frac{1}{8}$

Answer 1

The correct option is D $\frac{1}{8}$

In a face centered cubic cell, each point on a corner is shared by $8$ unit cells.
Thus, each point on a corner contributes one eight to the unit cell.