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Fe^(III) (Fe^(II) Fe^(III))O(4) represen...

`Fe^(III) (Fe^(II) Fe^(III))O_(4)` represent an inverse `2 : 3` spinel structre.

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The inverse spinel is represented by the formula `AB_(2)O_(4)` containing `A^(2+)` and `B^(3+)` ions.
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