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Polyatomic Ions
| Ion | Notation |
|---|---|
| ammonium | (NH4)+1 |
| hydronium | (H3O)+1 |
| acetate | (C2H3O2)–1 or (CH3COO)–1 |
| hydroxide | (OH)–1 |
| hypochlorite | (ClO)–1 |
| chlorite | (ClO2)–1 |
| chlorate | (ClO3)–1 |
| perchlorate | (ClO4)–1 |
| bicarbonate | (HCO3)– |
| carbonate | (CO3)2– |
| bisulfide | (HS)–1 |
| bisulfite | (HSO3)–1 |
| bisulfate | (HSO4)–1 |
| phosphite | (PO3)–3 |
| phosphate | (PO4)–3 |
| sulfite | (SO3)2– |
| sulfate | (SO4)2– |
| nitrite | (NO2)–1 |
| nitrate | (NO3)–1 |
| zinc | Zn2+ |
| silver | Ag+1 |
| -- Polyatomic Ions -- |