English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 171 NiTiO3 nickel(II) metatitanate Ni(VO3)2 nickel(II) metavanadate NiWO4 nickel(II) orthotungstate Ni2SiO4 nickel(II) orthosilicate Ni3(PO4)2 nickel(II) orthophosphate Ni3Sb2 nickel(II) antimonide O2 oxygen O2 − superoxide ion