Homonym: Cu (Copper)
Cu, or copper, is a chemical element with the symbol Cu and atomic number 29. It is a reddish-brown metal known for its excellent electrical and thermal conductivity. Copper is widely used in electrical wiring, plumbing, and roofing due to its durability and resistance to corrosion.
In nature, copper is often found in minerals such as chalcopyrite and malachite. It plays a vital role in various biological processes and is an essential trace element for living organisms. Copper is also used in alloys, such as bronze and brass, which enhance its properties for specific applications.