Ytterbium /ih-tur-bee-uhm/ (from the name of the village of Ytterby in Sweden) is a silver-white metal with atomic number 70, atomic mass 173.04, symbol Yb (lat. Ytterium) belonging to the lanthanoid family. Melt-resistant products are made from its small amount of protein.
Ex.Ytterbium, a rare earth metal, is utilized in the production of lasers and certain medical devices due to its unique optical properties.