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

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

Tardigrade Admin · Accepted Answer

sc = (8/8) = 1 fcc = (8/8) + (6/2) = 4 bcc = (8/8) + (1/1) = 2

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

$1, 4, 2$

$4, 1, 2$

$2, 4, 1$

$4, 8, 2$

$sc = \frac{8}{8} = 1$
$f cc = \frac{8}{8} + \frac{6}{2} = 4$
$b cc = \frac{8}{8} + \frac{1}{1} = 2$

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

1,4,2

4,1,2

2,4,1

4,8,2

sc=88​=1 fcc=88​+26​=4 bcc=88​+11​=2

$1, 4, 2$

$4, 1, 2$

$2, 4, 1$

$4, 8, 2$

$sc = \frac{8}{8} = 1$
$f cc = \frac{8}{8} + \frac{6}{2} = 4$
$b cc = \frac{8}{8} + \frac{1}{1} = 2$