In Group 16 silicon dioxide is actually a very common compound that broadly takes place as sand or quartz. SiO2 is tetrahedral with each silicon atom surrounded by four oxygen atoms. Several crystalline varieties exist Using the tetrahedra linked to type a polymeric chain. Examples are tridymite and cristobalite. A https://finnlnmlj.blognody.com/45179530/calcium-nitride-formula-options