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Structure of a mixed oxide is cubic clos...

Structure of a mixed oxide is cubic closed - packed (ccp) .The cubic unit cell of mixed oxide is composed of oxide ions .One fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovelent metal B .The formula of the oxide is

A

`ABO_2`

B

`A_2BO_2`

C

`A_2B_3O_4`

D

`AB_2O_2`

Text Solution

Verified by Experts

The correct Answer is:
D
no of atoms in CCP = 4 `O^(2-)` ions (say)
T.V = 8, O.V = 4
no of atoms of ` A. = 1/4 xx 8 = 2`
no of atoms of `B. = 4`
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