Question

an alloy of copper , sliver and gold is found to have copper constituting the cpp lattice . if silver atoms occupy the edge centers and gold is present at body centre , the alloy has a formula.​

Answer 1

Effective no. of Cu atoms in a unit cell=8×18+6×12=8×18+6×12

= 1+3 = 4

Effective No. of Ag atoms in a unit cell = 12×1412×14

=3=3

Effective no. of Au atoms in a unit cell = 1

So, general formula of compound is Cu4Ag3AuCu4Ag3Au

Hence answer is (c)