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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 a unit cell .x.atoms at corners ` = 1/8 xx 8 = 1`
‘y. atoms at face centres ` = 1/2 xx 6 = 3`
` therefore ` Formula is `XY_3`
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