Atomic Number 71     Atomic Mass 174.967     Density 9.8404 g/mL

State solid     Color silvery white     Electronegativity 1.3

Melting Point 1663°C     Boiling Point 3395°C

Natural Isotopes Lu-175 97.41%   Lu-176 2.59%

Abbreviated Electron Configuration [Xe] 4f¹⁴ 5d¹ 6s²

Discovered by Welsbach and Georges Urbain in 1907.