This set comprises 240 atom centres, scale 3cm = 100pm.
. The centres are colour coded according to the element, and the bond angles are engraved on the centres and marked by bars.Student Set Inorganic/Organic Chemistry The items consist of: Molecular shape, methane, butane and alkanes, isomerism, carbon compounds with multiple bonds, ring structures, molecules with nitrogen, phosphorous and sulphur, benzene, optical isomerism, sugars, carbohydrates, polymers and complex ions.