Barium titanate crystallizes in perovskite structure `(ABO_(3))` which is a cubic lattice with barium ions occupying the corners of the unit cell ,oxide ions occupying the face centres and titanium ion occupying centes of unit cell.if `Ti^(4+)` ions are described as occupying the holes in `Ba-O` lattice. then type of hole and fraction of these holes occupied by these ions areA. `100%` of tetrahedral holesB. `25%` of octahedral holesC. `100%` of octahedral holesD. `25%` of tetrahedral holes

Barium titanate crystallizes in perovskite structure `(ABO_(3))` which

1.	Barium titanate crystallizes in perovskite structure `(ABO_(3))` which is a cubic lattice with barium ions occupying the corners of the unit cell ,oxide ions occupying the face centres and titanium ion occupying centes of unit cell.if `Ti^(4+)` ions are described as occupying the holes in `Ba-O` lattice. then type of hole and fraction of these holes occupied by these ions areA. `100%` of tetrahedral holesB. `25%` of octahedral holesC. `100%` of octahedral holesD. `25%` of tetrahedral holes
Answer» Correct Answer - 2 Since the centre of an fcc unit cell is an octahedral void,`Ti^(4+)` ion is present in the octahedral void. Total number of octahedral voids per fcc unit cell is `4`. Since only one of the voids is captured we have `(1)/(4)xx100%=25%` occupany.

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