Solid State Tes...

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:

Which set of characteristics of ZnS crystal is correct?

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.

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

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.

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

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

Non-stoichiometric metal deficiency is observed in the salts of