Give Characteristics of Covalent Network Solids

Covalent Solids :- 1. The Constituent particles in covalent Network Solids are atoms. 2. The atoms are linked by continuous system of covalent bonds. The result is a rigid three dimensional Network that form a giant molecule. 3. As aresult of rigid and strongly bonded structure, covalent Network crystals are very hard. 4. They are hardest and incompressible. 5. They have high melting and boiling points. 6. The electrons are localised in Covalent bonds and hence are not mobile. As a result, Covalent Solids are poor conductors of heat and electricity. Eg. Diamond, quartz.