In a cubic close packed structure of mix...

In a cubic close packed structure of mixed oxides, the lattice is composed of oxide.ions, one eighth of tetrahedral voids are occupied by divalent cations while one hálf of octahedral voids are occupied by trivalent cations. What is the formula of the oxide

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Number of oxide ions per unit cell .=1.
Number of tetrahedral voids per ions in lattice =z
Number of divalent cation .(A)=1/8 xx 2=4`
Number of octạhedral yoids per ion in lattice .=1.

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