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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

`AuCu_(2)`

C

`AuCu_(3)`

D

`Au_(3)Cu`

Text Solution

Verified by Experts

The correct Answer is:
c
`Au-` atoms or unit cell `=8xx(1)/(8)=1`
`Cu-` atoms or unit cell `=6xx(1)/(2)=3`
`:. ` Formula is `AuCu_(3)`.
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