Template:Infobox lutetium

	child table, as reused in {IB-Lu} v; e; h;
Main isotopes of lutetium
ε0.45%	176Yb

Lutetium, ₇₁Lu
Lutetium
Pronunciation	/ljuːˈtiːʃiəm/ (lew-TEE-shee-əm)
Appearance	silvery white
Standard atomic weight Ar°(Lu)
	174.9668±0.0001; 174.97±0.01 (abridged);
Lutetium in the periodic table
	ytterbium ← lutetium → hafnium
Atomic number (Z)	71
Group	group 3
Period	period 6
Block	d-block
Electron configuration	[Xe] 4f14 5d1 6s2
Electrons per shell	2, 8, 18, 32, 9, 2
Physical properties
Phase at STP	solid
Melting point	1925 K (1652 °C, 3006 °F)
Boiling point	3675 K (3402 °C, 6156 °F)
Density (at 20° C)	9.840 g/cm3
when liquid (at m.p.)	9.3 g/cm3
Heat of fusion	ca. 22 kJ/mol
Heat of vaporization	414 kJ/mol
Molar heat capacity	26.86 J/(mol·K)
Atomic properties
Oxidation states	0, +1, +2, +3 (a weakly basic oxide)
Electronegativity	Pauling scale: 1.27
Ionization energies	1st: 523.5 kJ/mol ; 2nd: 1340 kJ/mol ; 3rd: 2022.3 kJ/mol ; ;
Atomic radius	empirical: 174 pm
Covalent radius	187±8 pm
	Spectral lines of lutetium
Other properties
Natural occurrence	primordial
Crystal structure	hexagonal close-packed (hcp) (hP2)
Lattice constants	a = 350.53 pm; c = 554.93 pm (at 20 °C)
Thermal expansion	poly: 9.9 µm/(m⋅K) (at r.t.)
Thermal conductivity	16.4 W/(m⋅K)
Electrical resistivity	poly: 582 nΩ⋅m (at r.t.)
Magnetic ordering	paramagnetic
Young's modulus	68.6 GPa
Shear modulus	27.2 GPa
Bulk modulus	47.6 GPa
Poisson ratio	0.261
Vickers hardness	755–1160 MPa
Brinell hardness	890–1300 MPa
CAS Number	7439-94-3
History
Naming	after Lutetia, Latin for: Paris, in the Roman era
Discovery	Carl Auer von Welsbach and Georges Urbain (1906)
First isolation	Carl Auer von Welsbach (1906)
Named by	Georges Urbain (1906)
Isotopes of lutetium v; e;
ε0.45%	176Yb
	Category: Lutetium; view; talk; edit; \| references

Lu · Lutetium
Yb ← ibox Yb	^iso ₇₁Lu [e] IB-Lu [e] IBisos [e]	→ Hf ibox Hf
cat:Lu (6) cat:Lu-isotopes (43) Commons Wikidata:Q1857 Wiktionary
indexes by PT (page) v e

Data sets read by {{Infobox element}}
Name and identifiers	view edit
Symbol etymology (11 non-trivial)	view edit
Top image (caption, alt)	view edit
Pronunciation	view edit
Allotropes (overview)	view edit
Group (overview)	view edit
Period (overview)	view edit
Block (overview)	view edit
Natural occurrence	view edit
Phase at STP	view edit
Oxidation states	view edit
Spectral lines image	view edit
Electron configuration (cmt, ref)	view edit
Isotopes
Standard atomic weight	view edit
most stable isotope	view edit
Wikidata
Wikidata *	view edit
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (12) · (this table: v )

References

^ "Standard Atomic Weights: Lutetium". CIAAW. 2007.
^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.
^ ^3.0 ^3.1 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.
^ Yttrium and all lanthanides except Ce and Pm have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017. and Arnold, Polly L.; Petrukhina, Marina A.; Bochenkov, Vladimir E.; Shabatina, Tatyana I.; Zagorskii, Vyacheslav V.; Cloke (2003-12-15). "Arene complexation of Sm, Eu, Tm and Yb atoms: a variable temperature spectroscopic investigation". Journal of Organometallic Chemistry. 688 (1–2): 49–55. doi:10.1016/j.jorganchem.2003.08.028.
^ 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.
^ ^6.0 ^6.1 ^6.2 ^6.3 Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.

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[1] "Standard Atomic Weights: Lutetium". CIAAW. 2007.

[CIAAW2021-2] Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.

[Arblaster_2018-3] 3.0 ^3.1 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.

[Cloke1993-4] Yttrium and all lanthanides except Ce and Pm have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017. and Arnold, Polly L.; Petrukhina, Marina A.; Bochenkov, Vladimir E.; Shabatina, Tatyana I.; Zagorskii, Vyacheslav V.; Cloke (2003-12-15). "Arene complexation of Sm, Eu, Tm and Yb atoms: a variable temperature spectroscopic investigation". Journal of Organometallic Chemistry. 688 (1–2): 49–55. doi:10.1016/j.jorganchem.2003.08.028.

[magnet-5] 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.

[NUBASE2020-6] 6.0 ^6.1 ^6.2 ^6.3 Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.

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