Lutetium is a chemical element with symbol Lu and atomic number 71. It is a silvery white metal, which resists corrosion in dry, but not in moist air. It is considered the first element of the 6th-period transition metals and the last element in the lanthanide series, and is traditionally counted among the rare earths.
Kept under oil in vac.pack
L 7094 (OTTO) Lutetium sputtering target, diam. x thickness 2 inch x 3 mm, 99.9% Cas 7439-94-3 - used for thin film deposition.