In the sodium chloride unit cell, the chloride ions form a cube in which each side is arranged like the following figure. The circles represent the positions of the chloride ions on one square face of the cube. All the other faces are the same. What is the name of this unit cell?
A)simple cubic
B)chloride-centered cubic
C)face-centered cubic
D)x-face cubic
E)body-centered cubic

Question

In the sodium chloride unit cell, the chloride ions form a cube in which each side is arranged like the following figure. The circles represent the positions of the chloride ions on one square face of the cube. All the other faces are the same. What is the name of this unit cell? 
A)simple cubic 
B)chloride-centered cubic 
C)face-centered cubic 
D)x-face cubic 
E)body-centered cubic

Quizplus · Accepted Answer

The arrangement of chloride ions in this unit cell matches the pattern of a face-centered cubic (FCC) structure. Sodium ions would occupy the octahedral voids in this structure.

In the Sodium Chloride Unit Cell, the Chloride Ions Form