In group sixteen silicon dioxide can be a very common compound that commonly occurs as sand or quartz. SiO2 is tetrahedral with each silicon atom surrounded by 4 oxygen atoms. Numerous crystalline sorts exist Together with the tetrahedra associated with variety a polymeric chain. Illustrations are tridymite and cristobalite. A https://aerogelpowder58146.blogdigy.com/details-fiction-and-rubber-grade-steric-acid-60506495