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An alloy of Cu, Ag and Au is found to ha...

An alloy of `Cu, Ag` and `Au` is found to have copper constituting the `c.c.p.` lattice. If `Ag` atom occupy the edge centres and `Au` atom is present at body centre, the formula of this alloy is `:`

Text Solution

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The correct Answer is:
`Cu_(4)Ag_(3)Au`
In ccp arrangement, Cu atoms occupy the corners and face centres.
`therefore` Number of Cu atoms = `8xx1//8+6xx1//2=4`
Number of silver atoms = Number of edge centres `xx1//4`
`=12xx1//4=3`
Number of gold atoms = 1(at the body centre)
Formula of alloy `=Cu_(4)Ag_(3)Au`.
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