Question

Copper crystallises into a foc structure and the unit cell has length of edge
3.61 x 10 - 8 cm. Calculate the density of copper.​

Answer 1

Answer:

In fcc lattice Z= 4

Atomic mass M = 63.5

a = 3.61x10-8

Therefore from the formula density = ZxM/a3 x N0

We get density = 4x 63.5/3.61x10-8 x 6.022 x1023

= 8.96 gcm-3.

The value is approximately equal to 8.92.

Thanks!!