In which of the following crystals alternate tetrahedral voids are occupied?
In body centred cubic, each atom/ion has a coordination number of 8.
Schottky defect in crystals is observed when
Frenkel defect is caused due to
An example of a non – stoichiometric compound is
A pure crystalline substance, on being heated gradually, first forms a turbid looking liquid and then the turbidity completely disappears. This behavior is the characteristic of substances forming.
Amorphous substances show
(i) short and long range order
(ii) short range order
(iii) long range order
(iv) have no sharp melting point
The solid NaCl is a bad conductor of electricity since
The correct statement in the following is
The crystal system of a compound with unit cell dimensions,
a = 0.387, b = 0.387 and c = 0.504 nm, and α = β = 900 and γ = 1200 is
If Z is the number of atoms in the unit cell that represents the closest packing sequence …… ABC ABC …… the number of tetrahedral voids in the unit cell is equal to
A solid is made of two elements X and Z. the atoms Z are in ccp arrangement while the atom X occupy all the tetrahedral sites. What is the formula of the compound?