Europium is a chemical element with the symbol Eu and atomic number 63. It is a rare earth metal that belongs to the lanthanide series on the periodic table. Europium is known for its unique properties, including its ability to emit a bright red light when exposed to ultraviolet radiation, making it valuable in the production of phosphorescent materials. This element is primarily used in the manufacturing of LED lights, television screens, and fluorescent lamps. Europium compounds are also utilized in various applications, such as in the creation of anti-counterfeiting measures in banknotes and in certain types of lasers.