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In a face centred cubic arrangement of A...

In a face centred cubic arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms at the face centres: One of the A atom is missing from one corner in unit cell . The simplest formula of compund is :

A

`A_7B_3`

B

`Ab_3`

C

`A_7B_24`

D

`A_7/8B_3`

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The correct Answer is:
C
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