Question

The number of carbon atoms per unit cell of diamond unit cell is :

• A. 1
• B. 4
• C. 8
• D. 6

Answer 1

Answer: (C)

8

Answer 2

In the diamond cubic unit cell, there are eight corner atoms, six face centered atoms and four more atoms inside the structure.
$\therefore$ Number of atoms present in a diamond cubic unit cell
$= 1 + 3 + 4 = 8$ atoms