Solid StateEasy
Question
An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of the faces of the cube. The empirical formula for this compound would be
Options
A.AB
B.A2B
C.AB3
D.A3B
Solution
A = 
× 8 = 1
(Corner)
B =
× 6 = 3
(Face centre)
∴ AB3
× 8 = 1(Corner)
B =
× 6 = 3(Face centre)
∴ AB3
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