An alloy of copper, silver and gold is f...

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

` Cu_(4)Ag_(2)`Au

`Cu_(4)Ag_(4)Au`

`Cu_(4)Ag_(3)Au`

Cu Ag Au

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