Solid State Question 156
Question: An $ fcc $ unit cell of aluminum contains the equivalent of how many atoms
[DCE 2003]
Options:
A) 1
B) 2
C) 3
D) 4
Show Answer
Answer:
Correct Answer: D
Solution:
$ \frac{1}{8}\times 8 $ (at corners) $ =1 $
$ \frac{1}{2}\times 6 $ (at face centre) $ =3 $
$ Z=1+3=4 $ (total no. of atoms)