English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 133 Hg2Cl2 mercury chloride Hg2I2 mercury iodide Hg3(AsO4)2 mercury(II) orthoarsenate IBr iodine(I) bromide IBr3 iodine(III) bromide ICl iodine(I) chloride ICl3 iodine(III) chloride IO3− iodate ion