Distinguish between crystalline solids and amorphous solids. Give examples.

Distinguish between crystalline solids and amorphous solids Property Crystalline solids Amorphous solids 1. Shape They have definite characteristic geometrical shape due to the orderly regular long range arrangement of constituent particles. They have irregular shape and lack characteristic geometrical shape […]

What is a unit cell? Explain Bravais lattices.

unit cell i. A unit cell is the smallest repeating structural unit of a crystalline solid. A crystalline solid can be obtained by repeating the unit cells (of the same crystalline substance) in space in all directions. ii. The lines […]

Write a note on: Diamond , Graphite & Fullerene

Diamond: a. Diamond is an allotrope of carbon. It is used in jewellery and is the most precious crystal.  b. Covalent bonds between sp3 hybridized carbon atoms continue in all directions to form a giant network.  c. Diamond is very […]

Name the different types of crystalline solids on the basis of different forces present in them. Explain the following terms. 

Answer:  Depending upon the nature of intermolecular forces present in the constituent particles, crystalline solids are classified into the following four classes: i. Molecular solids ii. Ionic solids iii. Metallic solids iv. Covalent solids Explanation: Molecular solids: a. Molecular solids […]

Explain crystalline solids and amorphous solids.

Answer : i. Crystalline solids: a. A crystalline solid usually consists of a large number of small crystals, each of them having a definite characteristic geometrical shape. These tiny crystals are called unit cells. b. A unit cell is a […]

Give the classification of solids.

 Answer:  Solids are classified as crystalline and amorphous on the basis of the presence or absence of orderly arrangement of their constituent particles (atoms, ions or molecules). i. Crystalline solids: A crystalline solid is a homogeneous solid in which the […]

Give characteristics of solid state.

The solid state is characterized by the following properties: i. Solids have definite mass, volume, shape and density. Usually, the density of solid state is greater than the density of liquid and gaseous state. Water and mercury are exceptions. The […]