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The unit cell of a binary compound of A ...

The unit cell of a binary compound of A and B metals has a ccp structure with A atoms occupying the corners and B atoms occupying the centres of each faces of the cubic unit cell. If during the crystallisation of this alloy, in the unit cell two A atoms are missed, the overall composition per unit cell is :

A

`AB_6`

B

`AB_4`

C

`AB_(8)`

D

`A_(6)B_(24)`

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The correct Answer is:
B
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