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Sulfur Ions
- Sulfide: \(\ce{S^-}\) (Oxidation State: -I)
Sulfur Oxyanions
They are ions of Sulfoxylic Acids (acids of Sulfur, Oxygen and Hydrogen)
- Sulfoxylate: \(\ce{SO2^{2-}}\) (Oxidation State: II)
- Sulfite: \(\ce{SO3^{2-}}\) (Oxidation State: IV)
- Sulfate: \(\ce{SO4^{2-}}\) (Oxidation State: VI)
Some more (from Wikipedia)
- Thiosulfate: \(\ce{S2O3^{2-}}\) (Oxidation State: IV (V and -I))
- Pyrosulfate: \(\ce{S2O7^{2-}}\) (Oxidation State: VI)
Wikipedia has more.