Question

characteristics of covalent network crystal​

Answer 1

Answer:

Covalent crystals tend to be hard and to have very high melting points because of the strong attractions between covalently bonded atoms. They do not conduct electricity because the electrons are bound too tightly to the bonds.

Answer 2

Answer:

The characteristics of covalent network crystals are as follows :

(1) The constituent paricles in these solids are atoms.

(2) The atoms in these crystals are held by covalent bonds forming a rigid three dimensional network which gives a giant molecule. Hence, the entire crystal is a single molecule.

3) These crystals are very hard (or hardest) and most inconmpressible.

(4) They have high melting points and boiling points.

6) Since the electrons are localised they are poor conductors of heat and electricity.

(6) Example: Quartz (SiO_2,), diamond.