- Acetate: CH₃CO₂⁻
- Ammonium: NH₄+
- Arsenate: AsO₄³⁻
- Azide: N₃⁻
- Bromate: BrO₃⁻
- Carbonate: CO₃²⁻
- Chlorate: ClO₃⁻
- Chlorite: ClO₂⁻
- Chromate: CrO₄²⁻
- Cyanide: CN⁻
- Dichromate: Cr₂O₇²⁻
- Dihydrogen phosphate: H₂PO₄²⁻
- Dimercury (I) ( or Mercury (I) ): Hg₂²+
- Hydrogen carbonate (bicarbonate): HCO₃⁻
- Hydrogen sulfate: HSO₄⁻
- Hydroxide: OH⁻
- Hypochlorite: ClO⁻
- Methylammonium: CH₃NH₃+
- Monohydrogen phosphate: HPO₄²⁻
- Nitrate: NO₃⁻
- Nitrite: NO₂⁻
- Oxalate: C₂O₄²⁻
- Perchlorate: ClO₄⁻
- Permanganate: MnO₄⁻
- Peroxide: O₂²⁻
- Phosphate: PO₄³⁻
- Sulfate: SO₄²⁻
- Sulfite: SO₃²⁻
- Thiocynate: SCN⁻
- Thiosulfate: S₂O₃²⁻
- Uranyl: UO₂²⁻