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Polyatomic Ions
| Question | Answer |
|---|---|
| mercury (I) | Hg2 [+2] |
| ammonium | NH4 [+1] |
| nitrite | NO2 [-1] |
| nitrate | NO3 [-1] |
| sulfite | SO3 [-2] |
| sulfate | SO4 [-2] |
| hydrogen sulfate/bisulfate | HSO4 [-1] |
| hydroxide | OH [-1] |
| cyanide | CN [-1] |
| phosphate | PO4 [-3] |
| hydrogen phosphate | HPO4 [-2] |
| dihydrogen phosphate | H2PO4 [-1] |
| thiocyanate | NCS [-1] |
| carbonate | CO3 [-2] |
| hydrogen carbonate/bicarbonate | HCO3 [-1] |
| hypochlorite | ClO [-1] |
| chlorite | ClO2 [-1] |
| chlorate | ClO3 [-1] |
| perchlorate | ClO4 [-1] |
| acetate | C2H3O2 [-1] |
| permanganate | MnO4 [-1] |
| dichromate | Cr2O7 [-2] |
| chromate | CrO4 [-2] |
| peroxide | O2 [-2] |
| oxalate | C2O4 [-2] |