Question

An f.c.c. crystal contains how many atoms in each unit cell ?

• A. 4
• B. 6
• C. 3
• D. 8

Answer 1

Answer: (A)

$N=\frac{N_c}{8}+\frac{N_f}{2}+N_i$
$=\frac{8}{8}+\frac{6}{2}+0$
$=1+3=4$