In Team sixteen silicon dioxide is really a very common compound that extensively happens as sand or quartz. SiO2 is tetrahedral with Every single silicon atom surrounded by four oxygen atoms. A lot of crystalline varieties exist Using the tetrahedra connected to type a polymeric chain. Illustrations are tridymite and https://graphene60256.signalwiki.com/2011004/the_basic_principles_of_silica_aerogel