sulfateioniin
The sulfate ion, SO4^2−, is an inorganic polyatomic anion derived from sulfuric acid by loss of two protons. In Estonian, the term is sulfateioniin. In this ion, sulfur is in the +6 oxidation state and is surrounded by four oxygen atoms in a tetrahedral arrangement.
Resonance among the four S−O bonds makes them equivalent, with each bond order about 1.5. In aqueous
Sulfate occurs in nature in minerals such as gypsum (CaSO4·2H2O) and kieserite (MgSO4). Seawater contains sulfate
Sulfate forms a wide range of salts with metals and nonmetals. It is used in fertilizers (for
Safety and environmental notes: sulfate salts generally have low acute toxicity, but inhaled dust can irritate