Lutetium
Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
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| Ìfarahàn |
silvery white
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| Àwọn ìní àníkárí |
| Orúkọ, àmì-ìdámọ̀, nọ́mbà |
lutetium, Lu, 71 |
| Ẹ̀ka apilẹ̀sẹ̀ |
lanthanide |
| Category notes |
Sometimes considered a transition metal |
| Àdìpọ̀, ìgbà, block |
n/a, 6, d |
| Ìwúwo átọ́mù |
174.967 g·mol−1 |
| Ìtòjọ ẹ̀lẹ́ktrónì |
[Xe] 6s2 4f14 5d1 |
| Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan |
2, 8, 18, 32, 9, 2 (Image) |
| Àwọn ìní aláfójúrí |
| Phase |
solid |
| Kíki (tó súnmọ́ r.t.) |
9.841 g·cm−3 |
| Liquid density at m.p. |
9.3 g·cm−3 |
| ojúàmì ìyọ́ |
1925 K, 1652 °C, 3006 °F |
| ajúàmì ìhó |
3675 K, 3402 °C, 6156 °F |
| Heat of fusion |
ca. 22 kJ·mol−1 |
| Heat of vaporization |
414 kJ·mol−1 |
| Specific heat capacity |
(25 °C) 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) |
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| 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 |
| Magnetic ordering |
paramagnetic[1] |
| Electrical resistivity |
(r.t.) (poly) 582 nΩ·m |
| Thermal conductivity |
(300 K) 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 |
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