An alloy of Au and Cu crystallises with ...

An alloy of Au and Cu crystallises with atoms of an occupying all lattice points at the corner's of cubic and atoms of Cu occupying the centres of all faces. Write the empirical formula of the alloy.

`AuCu`

`Au_(3)Cu`

`Au_(2)Cu`

`AuCu_(3)`

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Verified by Experts

The correct Answer is:

Au - corners `=8 xx 1/8 = 1 rArr` .An., Cu-Face centres `=6 xx 1/2 = 3 rArr Cu_(3), therefore AuCu_(3)`

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