Organometallic compounds are organic substances that have carbon-metal linkages. Alkali metals and alkaline earth metals are among the metals. In addition, it is occasionally recognised that metalloids like boron, silicon, and selenium produce organometallic compounds that are used in industrial chemical processes. Organolithium, organomagnesium, Grignard reagent, organocuprate, organozinc, and organocadmium are prominent examples of organometallic compounds. Organometallic compounds are those in which at least one bond exists between a metallic element and the carbon atom of an organic molecule. They are frequently used in both the laboratory and industry as catalysts and intermediates. Covalency exists among the elements because of the link between a metal and a carbon atom. These compounds have the unique property that, when held at room temperature, they are solids, yet others are liquids.