Ferrous compounds are chemical substances that contain iron in its +2 oxidation state, denoted as Fe²⁺. These compounds are commonly found in nature and play a crucial role in various biological and industrial processes. Examples include ferrous sulfate and ferrous oxide, which are used in fertilizers and pigments, respectively. In addition to their practical applications, ferrous compounds are important in the field of chemistry and metallurgy. They can easily oxidize to form ferric compounds, which contain iron in the +3 oxidation state. This property makes ferrous compounds significant in redox reactions and the production of steel.