How many "equivalent" atoms belong to a single body-centered cube unit cell?

Question

Quizplus · Accepted Answer

In a body-centered cubic (BCC) unit cell, there are 2 equivalent atoms: one atom is at the corners of the cube, and the other is in the center of the cube. The corner atoms are shared among eight adjacent unit cells, effectively contributing one eighth of an atom per cell, summing up to one whole atom from the corners, plus the one whole atom in the center.

How Many "Equivalent" Atoms Belong to a Single Body-Centered Cube