Iron(III), also known as ferric iron, is a form of iron with a +3 oxidation state. It is commonly found in various minerals and compounds, such as iron oxide and iron chloride. In this state, iron can participate in various chemical reactions and is essential for many biological processes. In nature, Iron(III) plays a crucial role in the formation of rust and is important for the growth of plants and microorganisms. It is also used in various industrial applications, including the production of pigments and as a catalyst in chemical reactions.