An atom in a particular unit cell has 12 nearest neighbor atoms around it. Which unit cell(s) are possible?
A)simple cubic
B)body-centered cubic
C)face-centered cubic
D)hexagonal
E)face-centered cubic or hexagonal

Question

Quizplus · Accepted Answer

An atom in a face-centered cubic (FCC) structure has 12 nearest neighbors, as does an atom in a hexagonal close-packed (HCP) structure. Simple cubic has 6 nearest neighbors, and body-centered cubic has 8 nearest neighbors.

An Atom in a Particular Unit Cell Has 12 Nearest