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A substance A(x)B(y) crystallises in a ...

A substance `A_(x)B_(y)` crystallises in a face centred cubic (fcc) lattice in which atoms 'A' occupy each corner of the cube and atoms 'B' occupy the centres of each face of the cube identify the correct formula of the compound.

A

`AB_(3)`

B

`A_(4)B_(3)`

C

`A_(3)B`

D

Formula cannot be specified

Text Solution

Verified by Experts

The correct Answer is:
A
Contribution by atoms A at the corners
`=1//8xx8=1`
Contribution by atoms B at the centre of all the six faces `=1//2xx6=3`
Formula of compound `=AB_(3)`
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