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An alloy of copper and gold crystallizes...

An alloy of copper and gold crystallizes in cubic lattic, in which the `Au-` atoms occupy the lattice points at the corners of cube and `Cu-` atoms occupy the centre of each face. The formula of this alloy is `:`

A

`AuCu`

B

`Au_(3)Cu`

C

`AuCu_(3)`

D

`AuCu_(2)`

Text Solution

Verified by Experts

The correct Answer is:
3
`(1)/(8)xx8=1Au` atom`//`unit cell`," "(1)/(2)xx6=3Cu` atoms`//`unit cell
The empirical formula is `AuCu_(3)`.
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