Lutetium was independently discovered in 1907 by French scientist Georges Urbain, Austrian mineralogist Baron Carl Auer von Welsbach, and American chemist Charles James.
Name: Lutetium Symbol: Lu Atomic number: 71 Atomic weight: 174.97 State: solid Group, period, block: n/a, 6, f Color: silvery white Classification: lanthanide Electron configuration: 6s2 4f14 5d1
Density: 9.841 g/cm-3 Melting point: 1925 K,1652 °C,3006 °F Boiling point: 3675 K,3402 °C,6156 °F
Oxidation states: 3, 2, 1 Electronegativity: 1.27 (Pauling scale) Ionization energies: 1st: 523.5 kJ·mol-1 Covalent radius: 187±8 pm Van der Waals radius: no data
There are two naturally occurring isotopes of lutetium exist, 175Lu, and 176Lu.