English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 167 Na3[Co(CO3)3] sodium tricarbonatocobaltate(III) Na3VO4 sodium orthovanadate Na4V2O7 sodium pyrovanadate NbBr5 niobium(V) bromide NbCl3 niobium(III) chloride NbCl5 niobium(V) chloride NbI5 niobium(V) iodide Nb2O3 niobium(III) oxide