One of the mineral cintaining calciumm, ...

One of the mineral cintaining calciumm, titanium (iv) and oxygen is termed as pervoskite and has the following structure. `Ca^(+2)` ions occupy the corners of the cube, `O^(2-)` occupy the face center and `Ti^(+4)` is present at the centre of the cube. Based in this information answer the question that follow:
[Atomic weight: `Ca=40, O=16, Ti=48`]
Which of the following cannot have pervoskite structure?

Ba Ti `O_(3)`

La `Ni_(0.5)Ir_(0.5)O_(3)`

`PbFe_(1//2)Nb_(1//2)O_(3)`

`MgAl_(2)O_(4)`

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One of the mineral cintaining calciumm, titanium (iv) and oxygen is termed as pervoskite and has the following structure. Ca^(+2) ions occupy the corners of the cube, O^(2-) occupy the face center and Ti^(+4) is present at the centre of the cube. Based in this information answer the question that follow: [Atomic weight: Ca=40, O=16, Ti=48 ] The ratio by mass of Ca:Ti:O in pervoskite is given by :

BaTiO_(3) has perovskite structure with Ba^(2+) ions at the corners O^(2-) ions at the center of each face and Ti^(4) ions at the center of a cubic unit cell.What is the number of Ti^(4+) ions nearest to Ba^(2+) ion?

A mineral is made of calcium ,titanium and oxygen Ca^(2+) ions located at corners , Ti^(4+) ions at the body -centre and O^(2-) ions face -centred of the unit cell. The molecular formula of the mineral is :

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 are

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