← Polyatomic Ions Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All hydronium H3O (+) dimercury (I) Hg2(2+) ammonium NH4(+) acetate CH3COO(-) cyanide CN(-) carbonate CO3(2-) hydrogen carbonate HCO3(-) oxalate C2O4(2-) hypochlorite ClO(-) chlorite ClO2(-) chlorate ClO3(-) perchlorate ClO4(-) chromate CrO4(2-) dichromate Cr2O7(2-) permanganate MnO4(-) nitrite NO2(-) nitrate NO3(-) peroxide O2(2-) hydroxide OH(-) phosphate PO4(3-) thiocyanate SCN(-) sulfite SO3(2-) sulfate SO4(2-) hydrogen sulfate HSO4(-) thiosulfate S2O3(2-)