The cubic closest-packed crystal structure has a ________ layering pattern that produces a ________ unit cell.
A)ababab; hexagonal
B)ababab; face-centered cubic
C)abcabcabc; hexagonal
D)abcabcabc; face-centered cubic
E)abcabcabc; body-centered cubic

Question

Quizplus · Accepted Answer

The cubic closest-packed structure has an ABCABC layering pattern, which means that each layer is shifted relative to the previous one. This stacking pattern results in a face-centered cubic (FCC) unit cell. Therefore, the correct choice is option D, which describes an ABCABC layering pattern and an FCC unit cell.

The Cubic Closest-Packed Crystal Structure Has a ________ Layering Pattern