The atomic weight, density, and atomic radius for three hypothetical alloys are listed in the following table. For each, determine whether its crystal structure is FCC, BCC, or simple cubic and then justifiy your determination. A simple cubic unit cell is shown in Figure 3.24.

Alloy Atomic Weight ($$g \over mol$$) Density ($$g \over {cm}^3$$) Atomic Radius (nm)
A 77.4 8.22 0.125
B 107.6 13.42 0.133
C 127.3 9.23 0.142