Electronic data		Thermal data		Steric data
Shells: 2,8,18,32,9,2 Orbitals: [Xe] 4f14 5d1 6s2 Electronegativity: 1.1, -- 1. Ionization potential: 5.4259 eV 2. Ionization potential: 13.888 eV 3. Ionization potential: 20.957 eV Oxidation states: 3 Electrical conductivity: 0.0185 10^6		Melting point: 1663 °C Boiling point: 3402 °C Specific heat: 0.15 J/gK Heat of fusion: 18.60 kJ/mol Heat of vaporization: 355.90 kJ/mol Thermal conductivity: 0.164 W/cmK		Atomic radius: 2.25 Å Ionic radius: 0.98 Å () Covalent radius: 1.56 Å Atomic volume: 17.78 cm³/mol Density (293 K): 9.85 g/cm³ Crystal structure: Hexagonal

Legend     Pocket calculator

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
173Lu	0	173	7/2	1.37y	EC	View
174Lu	0	174	1	3.3y	EC,+	View
174Lum	0	174	6	142d	IT,EC	View
175Lu	97.41	174.941	7/2	--	stable	--
176Lu	2.59	175.943	7	3.6E10y	-	View
177Lu	0	177	7/2	6.68d	-	View
177Lum	0	177	23/2	160.7d	-,IT	View

Legend

Name origin:	Named for the ancient name of Paris, Lutecia.
Description:	Silvery-white, hard, dense, rare earth metal.
Discovered by:	Georges Urbain
Year:	1907
Place:	France
Sources:	Found with ytterbium in gadolinite and xenotime. Usually obtained from monazite sand which is ofter 50% rare earth by weight and 0.003% lutetium.
Use(s):	It has no practical applications.