Other examples of covalent bonded crystals are diamond, graphite, quartz (SiO ) etc. Covalently bonded crystals are very hard, have high melting point ( diamond has a melting point of 3550 C) and are poor electrical conductors. Each electron that is shared is attracted to both the nuclei.
) etc. Covalently bonded crystals are very hard, have high melting point ( diamond has a melting point of 3550 
C) and are poor electrical conductors. Each electron that is shared is attracted to both the nuclei. 
