The unit cell in a certain lattice consists of a cube formed by an anion at each corner,an anion in the center,and a cation at the center of each face.The unit cell contains a net:
A)2 anions and 3 cations.
B)2 anions and 2 cations.
C)5 anions and 3 cations.
D)3 anions and 4 cations.
E)5 anions and 6 cations.

Question

Quizplus · Accepted Answer

The unit cell contains 8 anions (one at each corner and one in the center) and 6 cations (one at the center of each face). Therefore, the unit cell contains a net of 2 anions and 3 cations.

The Unit Cell in a Certain Lattice Consists of a Cube