Question

In fcc lattice of A and B type atoms are present. A atoms are present at the corners while B type are at face centres.If in each unit cell,two of the A type atom is missing from the corner,what is the simplest formula of the compound?o

Answer 1

For B = 6X1/2=3
For A=6X1/8=3/4
A3/4B3
A3/4x4 B3x4= A3B12