Aluminum Metal Crystallizes in a Face Centered Cubic Cell

Multiple Choice

Aluminum metal crystallizes in a face centered cubic cell . One face of this unit cell is shown in the diagram that follows. The length along one edge equals 4.04 . What is the atomic radius of an aluminum atom?

A) 1.43 Å
B) 2.02 Å
C) 2.86 Å
D) 5.72 Å
E) None of these