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polyatomic ions
| Question | Answer |
|---|---|
| C₂H₃O₂⁻ or CH₃COO⁻ | acetate |
| OH⁻ | hydroxide |
| HCO3⁻ | hydrogen carbonate (bicarbonate) |
| NO₂⁻ | nitrite |
| NO₃⁻ | nitrate |
| CN⁻ | cyanide |
| ClO₄⁻ | perchlorate |
| ClO₃⁻ | chlorate |
| ClO₂⁻ | chlorite |
| ClO⁻ | hypochlorite |
| SO₃⁻² | sulfite |
| SO₄⁻² | sulfate |
| CO₃²⁻ | carbonate |
| PO₄⁻³ | phosphate |
| PO₃⁻³ | phosphite |
| NH₄⁺ | ammonium |
| Ag⁺ | silver |
| Cu⁺ | copper1 |
| Zn²⁺ | zinc |
| Cu²⁺ | copper2 |
| Fe²⁺ | iron2 |
| Pb²⁺ | lead2 |
| Fe³⁺ | iron3 |
| Pb⁴⁺ | lead4 |