In group 16 silicon dioxide is often a quite common compound that greatly takes place as sand or quartz. SiO2 is tetrahedral with Every silicon atom surrounded by 4 oxygen atoms. Several crystalline kinds exist Along with the tetrahedra connected to variety a polymeric chain. Illustrations are tridymite and cristobalite. https://raymondjjhhf.eedblog.com/39082052/everything-about-aluminiumnitrid