In a body-centered cubic lattice, how many atoms are effectively contained in one unit cell, and where are they located?

In a body-centered cubic lattice, how many atoms are effectively contained in one unit cell, and where are they located?

• A. Two atoms: one at each corner and one at the center
• B. One atom at the center only
• C. Eight atoms at the corners
• D. Two atoms at the corners and none at the center

Answer: (A)