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A compound formed by elements X and Y cr...

A compound formed by elements `X` and `Y` crystallises in a cubic structure in which the `X` atoms are at the corners of a cube and the `Y` atoms are at the face centres.The formula of the compound is

A

`XY_3`

B

`X_3Y`

C

XY

D

`XY_2`

Text Solution

Verified by Experts

The correct Answer is:
A
In unit cell. X-atoms at the corners = `1/8xx8=1`
Y-atoms at the face centres= `1/2xx6=3`
Ratio of X und Y = 1:3
Hence, formula is `XY_3`
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