A certain mineral crystallizes in the cubic unit cell shown below.
-What kind of packing do the anions adopt?
A)body-centered cubic
B)cubic closest packed (face-centered cubic)
C)hexagonal closest packed
D)simple cubic

Question

A certain mineral crystallizes in the cubic unit cell shown below. 
-What kind of packing do the anions adopt?
A)body-centered cubic 
B)cubic closest packed (face-centered cubic) 
C)hexagonal closest packed 
D)simple cubic

Quizplus · Accepted Answer

The cubic unit cell shown in the image is face-centered, which is characteristic of cubic closest packing (CCP) of spheres. Therefore, the anions in the mineral adopt CCP packing.

A Certain Mineral Crystallizes in the Cubic Unit Cell Shown