Chemistry Question Bank

If the coordination number of Ca2+ in CaF2 is 8, then the coordination number of F– ion would be

In CsCl lattice the coordination number of Cl– ion is

The number of octahedral voids in a unit cell of a cubical closest packed structure is

For the structure given below the site marked as S is a

For the structure of solid given below if the lattice points represent A+ ions & the B– ions occupy all the tetrahedral voids then coordination number of A is

A solid A+B– has the B– ions arranged as below. If the A+ ions occupy half of the octahedral sites in the structure. The formula of solid is

Which of the following statements is not true about the voids?

The number of tetrahedral voids in the unit cell of a face centred cubic lattice of similar atoms is

The ratio of close-packed atoms to tetrahedral holes in cubic close packing is

In ABC packing if the number of atoms in the unit cell is n then the number of tetrahedral voids in the unit cell is equal to

A metal crystallizes in a face-centered unit cell. Its edge length is 0.410 nm. The radius of the metal is

Copper crystallises in face centred cubic lattice with a edge length of 361pm. What is the radius of copper atom in pm?

The ratio of cationic radius to anionic radius in an ionic crystal is greater than 0.732. Its coordination number is

For a solid with the following structure, the co- ordination number of the point B is

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

Aluminium has fcc structure. The length of the unit cell is 404 pm. If the density of the metal is 2.7 g cm–3, the molar mass of Al atom is

A face-centred cubic element (atomic mass 60) has a cell edge of 400 pm. What is its density?

Ag forms ccp lattice and X-ray studies show that the edge length of its unit cell is 408.6 pm. Find the density of silver. (Given that atomic mass of silver = 107.9 u)

An element with atomic mass 100 has a bcc structrue and edge length 400 pm. The density of element is

If the number of atoms per unit cell in a crystal is 2, the structure of crystal is

The number of atoms or molecules contained in one body centered cubic unit cell is

The number of atoms contained (i) in one body centred cubic unit cell and (ii) in one face centred cubic unit cell, is

Tetragonal crystal system has the following unit cell dimensions

Crystals can be classified into basic crystal habits equal to

Bravais lattices are of