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Polyatomic Ions
| Formula | Name and Charge |
|---|---|
| NH4 | AMMONIUM +1 |
| NO2 | NITRITE -1 |
| NO3 | NITRATE -1 |
| SO3 | SULFITE -2 |
| HSO4 | HYDROGEN SULFATE -1 |
| CN | CYANIDE -1 |
| OH | HYDROXIDE -1 |
| SCN | THIOCYANATE -1 |
| CO3 | CARBONATE -2 |
| HC03 | HYDROGEN CARBONATE -1 |
| AsO4 | ARSENATE -3 |
| ClO | HYPOCHLORITE -1 |
| ClO2 | CHLORITE -1 |
| ClO3 | CHLORATE -1 |
| ClO4 | PERCHLORATE -1 |
| CH3COO | ACETATE -1 |
| MnO4 | PERMANGANATE -1 |
| Cr2O7 | DICHROMATE -2 |
| CrO4 | CHROMATE -2 |
| O2 | PEROXIDE -2 |
| C2O4 | OXALATE -2 |
| PO4 | PHOSPHATE -3 |
| HPO4 | HYDROGEN PHOSPHATE -2 |
| H2PO4 | DIHYDROGEN PHOSPHATE -4 |
| IRON | +2 +3 |
| CHROMIUM | +2 +3 |
| MANGANESE | +2 +3 |
| COBALT | +2 +3 |
| COPPER | +1 +2 |
| MERCURY | +2 Hg2 +2 |
| TIN | +2 +4 |
| LEAD | +2 +4 |
| SILVER | Ag+ |
| CADMIUM | Cd 2+ |
| ZINC | Zn 2+ |
| ALUMINUM | Al 3+ |
| GALLIUM | Ga 3+ |