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Lutetium
71Lu
Y ↑ Lu ↓ Lr Periodic table ytterbium ← lutetium → hafnium
Panagway
silvery white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	lutetium, Lu, 71
Paglitok	/ljuːˈtiːʃiəm/ [[Help:Pronunciation respelling key|lew-Plantilya:Smallcaps all-shee-əm]]
Kategoriyang elemento	puthaw nga lantanido sometimes considered a transition metal
Group, period, block	n/a, 6, d
Gibug-aton sa atomo	174.9668(4)
Kontorno sa elektron	[Xe] 6s2 4f14 5d1 2, 8, 18, 32, 9, 2
History
Pagkadiskobre	Georges Urbain and Carl Auer von Welsbach (1906)
First isolation	Carl Auer von Welsbach (1906)
Physical properties
Phase	magahi
Density (near r.t.)	9.841 g·cm−3
Liquid density at m.p.	9.3 g·cm−3
Melting point	1925 K, 1652 °C, 3006 °F
Boiling point	3675 K, 3402 °C, 6156 °F
Heat of fusion	ca. 22 kJ·mol−1
Heat of vaporization	414 kJ·mol−1
Molar heat capacity	26.86 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1906 2103 2346 (2653) (3072) (3663)
Atomic properties
Oxidation states	3, 2, 1 (weakly basic oxide)
Electronegativity	1.27 (Pauling scale)
Ionization energies	1st: 523.5 kJ·mol−1
	2nd: 1340 kJ·mol−1
	3rd: 2022.3 kJ·mol−1
Atomic radius	174 pm
Covalent radius	187±8 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	paramagnetic[1]
Electrical resistivity	(r.t.) (poly) 582 nΩ·m
Thermal conductivity	16.4 W·m−1·K−1
Thermal expansion	(r.t.) (poly) 9.9 µm/(m·K)
Young's modulus	68.6 GPa
Shear modulus	27.2 GPa
Bulk modulus	47.6 GPa
Poisson ratio	0.261
Vickers hardness	1160 MPa
Brinell hardness	893 MPa
CAS registry number	7439-94-3
Most stable isotopes
Main article: Isotopes of lutetium
iso NA half-life DM DE (MeV) DP 173Lu syn 1.37 y ε 0.671 173Yb 174Lu syn 3.31 y ε 1.374 174Yb 175Lu 97.41% 175Lu is stable with 104 neutrons 176Lu 2.59% 3.78×1010 y β− 1.193 176Hf
· r

Ang lutesyo (Iningles lutetium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Lu ug kaiphan nga atomik 71. Ang lutesyo mao ang puthaw nga lantanido.

1. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics (PDF). CRC press. 2000. ISBN 0849304814.