Matching Pairs Common Polyatomic IonsOnline version Common Polyatomic Ions list from Chemistry - The Molecular Nature of Matter and Change - Third Canadian Edition by Maxwell Vonkeman 1 Hg2(2+) 2 CN(-) 3 ClO(-) 4 OH(-) 5 PO4(3-) 6 HSO4(-) 7 NO2(-) 8 Cr2O7(2-) 9 SO4(2-) 10 ClO3(-) 11 O2(2-) 12 NO3(-) 13 ClO4(-) 14 CH3COO(-) 15 NH4(+) 16 ClO2(-) 17 H3O(+) 18 MnO4(-) 19 H2PO4(-) 20 HCO3(-) 21 HPO4(2-) 22 CO3(2-) 23 CrO4(2-) 24 SO3(2-) Carbonate Sulfite Ammonium Perchlorate Phosphate Chlorate Chromate Bicarbonate/Hydrogen Carbonate Dihydrogen Phosphate Chlorite Hydrogen sulfate/bisulfate Permanganate Hydrogen Phosphate Cyanide Sulfate Dichromate Hypochlorite Nitrate Peroxide Hydronium Nitrite Hydroxide Acetate Mercury(I)
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