AP EAMCET Engineering 23 Sep 2020 Shift 1 Paper

Inverse spinel's structures are formulated as B(AB)O4, where the AB ions in parentheses occupy octahedral sites, and the other B ions are on tetrahedral sites. In such structures, O−2 anions form the fcc packing and 1∕8 th of the tetrahedral voids are occupied by divalent metal ion A+2. Trivalent metal ions B+3 are present in (1/8th tetrahedral voids +

1

4

th octahedral voids)