Solid State Tes...

If ionic radius of Cs⁺ and Cs^- are 1.69 Å and 1.89 Å respectively, the edge length of unit cell is

The arrangement of X^- ions around A⁺ ion in solid AX is given in the figure (not drawn to scale). If the radius of X^- is 250 pm, the radius of A⁺ is

The maximum proportion of available volume that can be filled by hard spheres in diamond is

A solid metal has ccp or fcc structure. The relation of side of cube (a) and radius of atom (r) will be

For a crystal, the angle of diffraction (2 θ) is 90° and the second order line has a d value of 2.28Å . The wavelength (in Å ) of X-rays used for Bragg's diffraction is

An ionic compound is expected to have tetrahedral structure if r₊ / r_- lies in the range of

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

A metal crystallises in a bcc lattice. Its unit cell edge length is about 300 pm and its molar mass about 50 g mol^-1. What would be the density of the metal (in g cm^-3)?

For AX ionic crystal to exist in bcc structure, the ratio of

Total volume of atoms present in a face centred cubic unit cell of a metal is (r = atomic radius)