Lutetium (Lu), element 71 – Learn Acer periodic table

Lutetium

Lanthanide, atomic number 71.

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.

Facts

Symbol Lu. Atomic mass 174.96681 u. Group 3, period 6. Electron configuration [Xe] 4f14 5d1 6s2. Electrons per shell 2, 8, 18, 32, 9, 2. State at room temperature: Solid. Melting point 1651.8 °C, boiling point 3401.8 °C. Discovered by Georges Urbain.

Element data from Wikipedia, CC BY-SA 3.0.