`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?

Find the number of Na^(+) ions and Cl^(-) ions associated with each in a unit cell and NaCl .

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 :

If the length of the body for CaCl which crystallizes into a cubic strructure with Cl^(Θ) ions at the corners and Cs^(o+) ions at the centre of the unit cell is 7 Å and the radius of he Cs^(o+) ions is 1.69Å , what is the radius of Cl^(ɵ) ions?

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 :

Barium titanate has the pervoskite structure, i.e. a cubinc lattice with Ba^(2+) ions at the corners of the unit cell, oxide ions at the face centres and titanium ions at the body centred. The molecular formula of barium titante is

Each unit cell of NaCl consists of 4 chloride ions and

An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centers of the faces of the cube .The empirical formula for this compound would be