Vanadium
Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
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| Ìfarahàn |
blue-silver-grey metal
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| Àwọn ìní àníkárí |
| Orúkọ, àmì-ìdámọ̀, nọ́mbà |
vanadium, V, 23 |
| Ẹ̀ka apilẹ̀sẹ̀ |
transition metal |
| Àdìpọ̀, ìgbà, block |
5, 4, d |
| Ìwúwo átọ́mù |
50.9415(1) g·mol−1 |
| Ìtòjọ ẹ̀lẹ́ktrónì |
[Ar] 3d3 4s2 |
| Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan |
2, 8, 11, 2 (Image) |
| Àwọn ìní aláfójúrí |
| Phase |
solid |
| Kíki (tó súnmọ́ r.t.) |
6.0 g·cm−3 |
| Liquid density at m.p. |
5.5 g·cm−3 |
| ojúàmì ìyọ́ |
2183 K, 1910 °C, 3470 °F |
| ajúàmì ìhó |
3680 K, 3407 °C, 6165 °F |
| Heat of fusion |
21.5 kJ·mol−1 |
| Heat of vaporization |
459 kJ·mol−1 |
| Specific heat capacity |
(25 °C) 24.89 J·mol−1·K−1 |
| Vapor pressure |
| P/Pa |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T/K |
2101 |
2289 |
2523 |
2814 |
3187 |
3679 |
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| Atomic properties |
| Oxidation states |
5, 4, 3, 2, 1, -1
(amphoteric oxide) |
| Electronegativity |
1.63 (Pauling scale) |
Ionization energies
(more) |
1st: 650.9 kJ·mol−1 |
| 2nd: 1414 kJ·mol−1 |
| 3rd: 2830 kJ·mol−1 |
| Atomic radius |
134 pm |
| Covalent radius |
153±8 pm |
| Miscellanea |
| Crystal structure |
body-centered cubic |
| Magnetic ordering |
paramagnetic |
| Electrical resistivity |
(20 °C) 197 nΩ·m |
| Thermal conductivity |
(300 K) 30.7 W·m−1·K−1 |
| Thermal expansion |
(25 °C) 8.4 µm·m−1·K−1 |
| Speed of sound (thin rod) |
(20 °C) 4560 m/s |
| Young's modulus |
128 GPa |
| Shear modulus |
47 GPa |
| Bulk modulus |
160 GPa |
| Poisson ratio |
0.37 |
| Mohs hardness |
6.7 |
| CAS registry number |
7440-62-2 |
| Most stable isotopes |
| Main article: Isotopes of vanadium |
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