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Polyatomic
chem
| Term | Definition |
|---|---|
| Dichromate ion | Cr₂O₇²⁻ |
| Phosphite ion | PO₃³⁻ |
| Ammonium ion | NH₄⁺ (cation) |
| Acetate ion (anion ) | C₂H₃O₂⁻ |
| Cyanide ion | CN⁻ |
| hydrogen carbonate ion | HCO₃⁻ |
| Hypochlorite ion | ClO⁻ |
| Nitrate ion | NO₃⁻ |
| Perchlorate ion | ClO₄⁻ |
| Carbonate ion | CO₃⁻² |
| Chlorate ion | ClO₃⁻ |
| Chlorite ion | ClO₂⁻ (anion) |
| Chromate ion | CrO₄²⁻ |
| hydrogen sulfate ion | HSO₄⁻ |
| hydroxide ion | OH⁻ |
| Nitrite ion | NO₂⁻ |
| Permanganate ion | MnO₄⁻ |
| Phosphate ion | PO₄³⁻ |
| Sulfate ion | SO₄²⁻ |
| Sulfite ion | SO₃²⁻ |
| Phosphate ion | PO₄³⁻ |