Lutetium

Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
Lọ sí: atọ́ka, àwárí
Lutetium
71Lu
-

Lu

Lr
ytterbiumlutetiumhafnium
Ìhànsójú
silvery white
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà lutetium, Lu, 71
Ẹ̀ka ẹ́límẹ̀nti lanthanide
Sometimes considered a transition metal
Ẹgbẹ́, àsìkò, àdìpò n/a6, d
Ìwúwo átọ́mù 174.967
Ìtòléra ẹ̀lẹ́ktrónì [Xe] 6s2 4f14 5d1
2, 8, 18, 32, 9, 2
Physical properties
Phase solid
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 (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 17±8 pm
Miscellanea
Crystal structure hexagonal
Lutetium has a hexagonal crystal structure
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
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù 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% 3.78×1010y β 1.193 176Hf
· r


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]