Q. A fcc crystal contains how many atoms in each unit cell?

1115 262 Delhi UMET/DPMTDelhi UMET/DPMT 2001 Report Error

A

4

B

6

C

3

D

8

Solution:

$N = \frac{N _{c}}{8} + \frac{N _{f}}{2} + N_{i}$
$= \frac{8}{8} + \frac{6}{2} + 0$
$= 1 + 3 = 4$