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A compound formed by elements A and B ha...

A compound formed by elements A and B has a cubic structure in which A atoms are at the corner of the cube and B atoms are at the face centres. Derive the fomula of the compound.

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A atoms from 8 corners of a cube `= (1)/(8)xx8=1`
B atoms from 6 face centres in unit cell `= (1)/(2)xx6=3`
Hence formula of compound `= AB_(3)`
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