Solid State Tes...

Non-stoichiometric metal deficiency is observed in the salts of

What is the number of unit cells present in a cube-shaped ideal crystal of NaCl of mass 1.0 g?

Ionic solids containing large differences in sizes of ions show

The crystal system of a compound with unit cell dimensions a = 0.387 nm, b = 0.387 nm, c = 0.504 nm and  =  = 90^o, = 120^o is

Which of the following statements is correct?

Which is true for F - centers?

For a metallic crystal having bcc type staking pattern, what percentage of the volume of its lattice is empty?

Which of the following compounds does not show metal deficiency defects?

Which of the following statements is INCORRECT?

Amorphous form of silica is

Choose the correct statement(s) from the following:

1. Frenkel and Schottky defects are thermodynamic defects.
2. Compounds with Schottky defects do not obey law of constant composition.
3. In compound with Frenkel defect, among a majority of metal ions of one valency, a few metal ions of another valency are also found.

Which set of characteristics of ZnS crystal is correct?

The cubic unit cell of Al (molar mass 27 g/mol) has an edge length of 405 pm. Its density is 2.7 g/cm³. The cubic unit cell is

Calculate the packing efficiency of the two dimensional square unit cell which is shown below:

The axial angles in triclinic crystal system are

If Z is the number of atoms in the unit cell that represents the closest packing sequence ABC ABC ABC _______, the number of tetrahedral voids in the unit cell is:

Find the respective coordination numbers of cations and anions in calcium fluoride structure.

Which of the following statements are not true about hexagonal close packing?

(a) It has 26% empty space.
(b) In this arrangement, third layer is identical to the first layer.
(c) The coordination number in this arrangement is 6.
(d) It is as closely packed as body centred cubic packing.

The close packing ABC ABC _____ is 

Addition of CdCl₂ to AgCl yields a solid solution where divalent cations Cd²⁺ occupy Ag⁺ sites. Which of the following statements is true?

Group 14 elements are converted to p–type semiconductors by doping them with

Brass is an example of

NH₄Cl crystallises in a body centred cubic lattice, with a unit cell distance of 387 pm. If the radius of the Cl ions is 181 pm, then the distance between the oppositely charged ions in the lattice and the radius of the NH₄⁺ ion are

Calculate the number of unit cells present in 1 g of gold which has face centered cubic lattice.

The particles, when placed in adjacent rows, show a horizontal as well as vertical alignment and form squares. This type of packing is known as

The coordination number of barium ions, Ba²⁺, in barium fluoride (BaF₂) is 8. What must be the coordination number of fluoride ions?

Coordination number of hcp and ccp is

In a face centered cubic lattice, a unit cell is shared equally by how many unit cells?

If NaCl is doped with 10^-4 mol% of SrCl₂, the concentration of cationic vacancies will be

Defect shown by non - ionic solids is