Question

Calculate the number of unit cells in 54 grams of
Aluminium if it crystallizes in a face centered cubic
structure. (Atomic mass of AL=279/mol).​

Answer 1

Answer:

Number of atoms of Al =

27

8.1

×N

A

As there are 4 atoms present per unit cell

Therefore number of unit cells =

27×4

8.1×6.022×10

23

=4.51×10

22

unit cells