Vanadia is a chemical element with the symbol V and atomic number 23. It is a hard, silvery-gray metal that is part of the transition metals group in the periodic table. Vanadium is primarily used to produce strong steel alloys, enhancing their strength and resistance to corrosion. In nature, vanadium is found in various minerals and is often extracted from vanadinite and carnotite. It plays a role in some biological systems, although its exact function is not fully understood. Additionally, vanadium compounds are used in batteries, particularly in vanadium redox flow batteries, which are important for energy storage.