An alloy of copper, silver and gold is found to have copper constituting the ccp lattice. If silver atoms occupy the edge centers and gold is present at body center, the alloy has a formula
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a
CuAgAu
b
Cu4Ag2Au
c
Cu4Ag3Au
d
Cu4Ag4Au
answer is C.
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Detailed Solution
In ccp lattice number of atoms = 4So, number of Cu atoms = 4∴Number of edge centered atoms =12×14=3∴Number of silver atoms = 3Number of gold atoms - 1∴ Formula is Cu4Ag3Au.