Yttrium
Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
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| Ìfarahàn |
silvery white
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| Àwọn ìní àníkárí |
| Orúkọ, àmì-ìdámọ̀, nọ́mbà |
yttrium, Y, 39 |
| Ẹ̀ka apilẹ̀sẹ̀ |
transition metal |
| Àdìpọ̀, ìgbà, block |
3, 5, d |
| Ìwúwo átọ́mù |
88.90585 g·mol−1 |
| Ìtòjọ ẹ̀lẹ́ktrónì |
[Kr] 4d1 5s2 |
| Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan |
2, 8, 18, 9, 2 (Image) |
| Àwọn ìní aláfójúrí |
| Phase |
solid |
| Kíki (tó súnmọ́ r.t.) |
4.472 g·cm−3 |
| Liquid density at m.p. |
4.24 g·cm−3 |
| ojúàmì ìyọ́ |
1799 K, 1526 °C, 2779 °F |
| ajúàmì ìhó |
3609 K, 3336 °C, 6037 °F |
| Heat of fusion |
11.42 kJ·mol−1 |
| Heat of vaporization |
365 kJ·mol−1 |
| Specific heat capacity |
(25 °C) 26.53 J·mol−1·K−1 |
| Vapor pressure |
| P/Pa |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T/K |
1883 |
2075 |
(2320) |
(2627) |
(3036) |
(3607) |
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| Atomic properties |
| Oxidation states |
3, 2, 1 |
| Electronegativity |
1.22 (Pauling scale) |
| Ionization energies |
1st: 600 kJ·mol−1 |
| 2nd: 1180 kJ·mol−1 |
| 3rd: 1980 kJ·mol−1 |
| Atomic radius |
180 pm |
| Covalent radius |
190±7 pm |
| Miscellanea |
| Crystal structure |
hexagonal |
| Magnetic ordering |
paramagnetic[1] |
| Electrical resistivity |
(r.t.) (α, poly) 596 nΩ·m |
| Thermal conductivity |
(300 K) 17.2 W·m−1·K−1 |
| Thermal expansion |
(r.t.) (α, poly)
10.6 µm/(m·K) |
| Speed of sound (thin rod) |
(20 °C) 3300 m/s |
| Young's modulus |
63.5 GPa |
| Shear modulus |
25.6 GPa |
| Bulk modulus |
41.2 GPa |
| Poisson ratio |
0.243 |
| Brinell hardness |
589 MPa |
| CAS registry number |
7440-65-5 |
| Most stable isotopes |
| Main article: Isotopes of yttrium |
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