The Number Of Sphere Contained (i) In One Body Centred Cubic Unit Cell And (ii) In One Face Centred Cubic Unit Cell, 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

In which of the following crystals alternate tetrahedral voids are occupied?

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?

An element occurring in the bcc structure has 12.08 × 10²³ unit cells. The total number of atoms of the elements in these cells will be

CsBr crystal has bcc structure. It has an edge length of 4.3. the shortest interionic distance between Cs⁺ and Br ^–  ions is