The chemical formula for sulfate S2-
Organic sulphides are compounds that are formed when sulphur bonds to two organic groups.
Inorganic sulphides are compounds that contain a negatively-charged sulphide ion. Example: Salt
Phosphine sulphide compounds are formed when sulphur bonds with an organic phosphine.
The chemical formula for sulfate SO42-
Sulphite ions are the polyatomic ions which are formed by the combination of sulphur and oxygen atoms.