Chemistry - Solid State Question with Solution | TestHub

In a three-dimensional crystal lattice, any corner of a cubic unit cell is shared by eight adjacent unit cells.

Four unit cells are in the same layer and four are in the layer directly above or below it.

Therefore, a particle located at the corner of a body-centered cubic (bcc) unit cell is shared by 8 unit cells, making its contribution to a single unit cell equal to $\frac{1}{8}$.

Answer: 8