English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 183 SeTe selenium(IV) telluride SiBr4 silicon(IV) bromide SiC silicon carbide SiCl4 silicon(IV) chloride SiH4 silane SiI4 silicon(IV) iodide SiO2 silicon(IV) oxide or silica SiO44− silicate ion