NEET Chemistry The Solid State Questions Solved

An alloy of copper, silver and gold is found  to ave copper constituting the ccp lattice. If silver atoms occupy the edge centres and gold is present at body centre, the alloy has a formula - 

(A) Cu4Ag2Au

(B) Cu4Ag4Au

(C) Cu4Ag3Au

(D) CuAgAu

(C) ccp lattice = fcc lattice 

Zcu = 8x1/8 +6x1/2 =4

ZAg = 12x1/4 =3

(Each edge centered atom is contributed by 4 unit cell)

ZAu =  1

Formula of alloy = Cu4Ag3Au

Difficulty Level:

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