An alloy of copper, silver and gold is found to have copper constituting the ccp lattice. It gold atoms occupy the edge centres and silver is persent at body centre, the alloy has a formulaA. `Cu_(4)Ag_(2)Au`B. `Cu_(4)Ag_(4)Au`C. `Cu_(4)Au_(3)Ag`D. `cuAg_(3)Au`

An alloy of copper, silver and gold is found to have copper constituti

1.	An alloy of copper, silver and gold is found to have copper constituting the ccp lattice. It gold atoms occupy the edge centres and silver is persent at body centre, the alloy has a formulaA. `Cu_(4)Ag_(2)Au`B. `Cu_(4)Ag_(4)Au`C. `Cu_(4)Au_(3)Ag`D. `cuAg_(3)Au`
Answer» Correct Answer - C No. ofCu atoms in the unit cell (fcc/ccp) `=(8xx(1)/(8))+(6xx(1)/(2))=4` Au atoms occupying the edge centres `=12xx(1)/(4)=3` Ag atom present at the body centre = 1. Hence, the formula is `Cu_(4)Au_(3)Ag` .

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An alloy of copper, silver and gold is found to have copper constituting the ccp lattice. It gold atoms occupy the edge centres and silver is persent at body centre, the alloy has a formulaA. `Cu_(4)Ag_(2)Au`B. `Cu_(4)Ag_(4)Au`C. `Cu_(4)Au_(3)Ag`D. `cuAg_(3)Au`

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