Polyatomics Ions
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| 🇬🇧 | 🇬🇧 |
| Acetate | (C2H3O2)^-1 or (CH3COO)^-1 |
| Hypochlorite | (CLO)^-1 |
| Chlorite | (CLO2)^-1 |
| Chlorate | (CLO3)^-1 |
| Perchlorate | (CLO4)^-1 |
| Cyanide | (CN)^-1 |
| Hydrogren carbonate | (HCO3)^-1 or (bicarbonate) |
| Hydroxide | (OH)^-1 |
| Permanganate | (MnO4)^-1 |
| Nitrite | (NO2)^-1 |
| Nitrate | (NO3)^-1 |
| Carbonate | (CO3)^-2 |
| Chromate | (CrO4)^-2 |
| Dichromate | (Cr2O7)^-2 |
| Oxalate | (C2O4)^-2 |
| Selenate | (SeO4)^-2 |
| Sulfite | (SO3)^-2 |
| Sulfate | (SO4)^-2 |
| Arsenate | (AsO4)^-3 |
| Borate | (BO3)^-3 |
| Phosphite | (PO3)^-3 |
| Phosphate | (PO4)^-3 |
| Silicate | (SiO4)^-4 |
| Ammonium | (NH4)^+1 |