Vanadium, 23 V Vanadium Pípè / v ə ˈ n eɪ d i ə m / (və-NAY -dee-əm ) Ìhànsójú blue-silver-grey metal Ìwúwo átọ̀mù A r, std (V) 50.9415(1) [ 1] Vanadium ní orí tábìlì àyè
Nọ́mbà átọ̀mù (Z ) 23 Ẹgbẹ́ group 5 Àyè àyè 4 Àdìpọ̀ Àdìpọ̀-d Ẹ̀ka ẹ́límẹ́ntì Transition metal Ìtò ẹ̀lẹ́ktrọ́nù [Ar ] 3d3 4s2 Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan 2, 8, 11, 2 Àwọn ohun ìní ara Ìfarahàn at STP solid Ìgbà ìyọ́ 2183 K (1910 °C, 3470 °F) Ígbà ìhó 3680 K (3407 °C, 6165 °F) Kíki (near r.t. ) 6.0 g/cm3 when liquid (at m.p. ) 5.5 g/cm3 Heat of fusion 21.5 kJ/mol Heat of 459 kJ/mol Molar heat capacity 24.89 J/(mol·K) pressure
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
2101
2289
2523
2814
3187
3679
Atomic properties Oxidation states −3, −1, 0, +1, +2, +3, +4, +5 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment Electronegativity Pauling scale: 1.63 energies Atomic radius empirical: 134 pm Covalent radius 153±8 pm Color lines in a spectral range Spectral lines of vanadiumOther properties Natural occurrence primordial Crystal structure (bcc) Speed of sound thin rod 4560 m/s (at 20 °C) Thermal expansion 8.4 µm/(m·K) (at 25 °C) Thermal conductivity 30.7 W/(m·K) Electrical resistivity 197 n Ω·m (at 20 °C) Magnetic ordering paramagnetic Young's modulus 128 GPa Shear modulus 47 GPa Bulk modulus 160 GPa Poisson ratio 0.37 Mohs hardness 6.7 CAS Number 7440-62-2 Main isotopes of vanadium
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↑ Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; De Bièvre, Paul; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry 88 (3): 265–91. doi :10.1515/pac-2015-0305 .