Question

The number of atoms per unit cell in a simple cubic, face-centered cubic and body-centered cubic are ………. respectively -

• A. 1 , 4, 2
• B. 4, 1, 2
• C. 2, 4, 1
• D. 4, 8, 2

Answer 1

Answer: (A)

1 , 4, 2

Answer 2

sc = $\frac{8}{8}$ = 1

fcc = $\frac{8}{8}$ + $\frac{6}{2}$ = 4

bcc = $\frac{8}{8}$ + $\frac{1}{1}$ = 2