The Solid State Ques 6
6. The number of carbon atoms per unit cell of diamond unit cell is :
[NEET 2013]
(a) 8
(b) 6
(c) 1
(d) 4
Show Answer
Answer:
Correct Answer: 6.(a)
Solution:
(a) Diamond is like $ZnS$. In diamond cubic unit cell, there are eight corner atoms, six face centered atoms and four more atoms inside the structure (tetrahedral voids).
Total no. of atoms present per unit cell
$=8 \times \frac{1}{8}+6 \times \frac{1}{2}+4=8$
$ \text{(Corners)} \hspace{2mm} \text{(face centered)} \hspace{2mm} \text{(inside body)} $
BETA
