Template:Infobox lutetium

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Lutetium,  71Lu
Template:Infobox element/symbol-to-top-image-alt
General properties
PronunciationTemplate:Infobox element/pronunciation
Appearancesilvery white
Standard atomic weight (Ar, standard)Template:Infobox element/standard atomic weight
Mass numberTemplate:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Lutetium in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)71
GroupTemplate:Infobox element/group
Periodperiod 6
Blockf-block
Element categoryTemplate:Infobox element/category format, sometimes considered a transition metal
Electron configuration[Xe] 4f14 5d1 6s2
Electrons per shell
2, 8, 18, 32, 9, 2
Physical properties
Phase at STPsolid
Melting point1925 K ​(1652 °C, ​3006 °F)
Boiling point3675 K ​(3402 °C, ​6156 °F)
Density (near r.t.)9.841 g/cm3
when liquid (at m.p.)9.3 g/cm3
Heat of fusionca. 22 kJ/mol
[[Enthalpy of vaporization|Heat of Template:Engvar]]414 kJ/mol
Molar heat capacity26.86 J/(mol·K)
[[Vapor pressure|Template:Engvar pressure]]
Atomic properties
Oxidation statesTemplate:Infobox element/symbol-to-oxidation-state
ElectronegativityPauling scale: 1.27
[[Ionization energy|Template:Engvar energies]]
  • 1st: 523.5 kJ/mol
  • 2nd: 1340 kJ/mol
  • 3rd: 2022.3 kJ/mol
Atomic radiusempirical: 174 pm
Covalent radius187±8 pm
Template:Infobox element/spectral lines
Other properties
Crystal structureTemplate:Infobox element/crystal structure
Thermal expansionpoly: 9.9 µm/(m·K) (at r.t.)
Thermal conductivity16.4 W/(m·K)
Electrical resistivitypoly: 582 nΩ·m (at r.t.)
Magnetic orderingparamagnetic[1]
Young's modulus68.6 GPa
Shear modulus27.2 GPa
Bulk modulus47.6 GPa
Poisson ratio0.261
Vickers hardness755–1160 MPa
Brinell hardness890–1300 MPa
CAS Number7439-94-3
History
Namingafter Lutetia, Latin for: Paris, in the Roman era
DiscoveryCarl Auer von Welsbach and Georges Urbain (1906)
First isolationCarl Auer von Welsbach (1906)
Named byGeorges Urbain (1906)
Main isotopes of lutetium
Template:Infobox element/isotopes table
| references

Template:Infobox element/element navigation Template:Template reference list Expression error: Unrecognized word "template".

  1. Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.