Vanadyo

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Vanadium
23V
-

V

Nb
titaniumvanadiumchromium
Appearance
blue-silver-grey metal
General properties
Name, simbolo, kaiphan vanadium, V, 23
Pronunciation Plantilya:IPAc-en
Plantilya:Respell
Element category puthaw nga transisyon
Group, period, block 54, d
Standard atomic weight 50.9415(1)
Electron configuration [Ar] 3d3 4s2
2, 8, 11, 2
Electron shells of vanadium (2, 8, 11, 2)
History
Discovery Andrés Manuel del Río (1801)
First isolation Nils Gabriel Sefström (1830)
Named by Nils Gabriel Sefström (1830)
Physical properties
Phase magahi
Density (near r.t.) 6.0 g·cm−3
Liquid density at m.p. 5.5 g·cm−3
Melting point 2183 K, 1910 °C, 3470 °F
Boiling point 3680 K, 3407 °C, 6165 °F
Heat of fusion 21.5 kJ·mol−1
Heat of vaporization 459 kJ·mol−1
Molar heat capacity 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
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
Vanadium has a body-centered cubic crystal structure
Magnetic ordering paramagnetic
Electrical resistivity (20 °C) 197 nΩ·m
Thermal conductivity 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−1
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
iso NA half-life DM DE (MeV) DP
48V syn 15.9735 d β+ 4.0123 48Ti
49V syn 330 d ε 0.6019 49Ti
50V 0.25% 1.5×1017y ε 2.2083 50Ti
β 1.0369 50Cr
51V 99.75% 51V is stable with 28 neutrons
t  h  u
· r

Ang vanadyo (Iningles vanadium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga V ug kaiphan nga atomik 23. Ang vanadyo mao ang puthaw nga transisyon.

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