Question

1) the no of atoms per unit cell is case of face​

Answer 1

Explanation:

As shown in Figure 12.5, a face-centered cubic unit cell has eight atoms at the corners of the cube and six atoms on the faces. Because atoms on a face are shared by two unit cells, each counts as 12 atom per unit cell, giving 6×12=3 Au atoms per unit cell

Answer 2

Answer:

When atoms are present on face than no. of atom per unit cell is

$\frac{1}{2} \times 6 = 3$

And for the face center cubic unit is

$\frac{1}{2} \times 6 + \frac{1}{8} \times 8 = 3 + 1 = 4$

HOPE IT HELPS.....

PLEASE MARK ME AS BRAINLIEST ANSWER....