Vanadium

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Vanadium,  23V
Vanadium etched.jpg
General properties
Appearance blue-siller-grey metal
Staundart atomic wecht (Ar, staundart) 50.9415(1)
Vanadium in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
-

V

Nb
titaniumvanadiumchromium
Atomic nummer (Z) 23
Group group 5
Period period 4
Element category   transeetion metal
Block d-block
Electron confeeguration [Ar] 3d3 4s2
Electrons per shell
2, 8, 11, 2
Pheesical properties
Phase (at STP) solit
Meltin pynt 2183 K ​(1910 °C, ​3470 °F)
Bylin pynt 3680 K ​(3407 °C, ​6165 °F)
Density (near r.t.) 6.0 g/cm3
when liquid (at m.p.) 5.5 g/cm3
Heat o fusion 21.5 kJ/mol
Heat o vapourisation 459 kJ/mol
Molar heat capacity 24.89 J/(mol·K)
Vapour pressur
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 Pauling scale: 1.63
Ionisation energies
Atomic radius empirical: 134 pm
Covalent radius 153±8 pm
Color lines in a spectral range
Miscellanea
Crestal structur body-centred cubic (bcc)
Body-centered cubic creestal structur for vanadium
Speed o soond 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 orderin paramagnetic
Young's modulus 128 GPa
Shear modulus 47 GPa
Bouk modulus 160 GPa
Poisson ratio 0.37
Mohs haurdness 6.7
CAS Nummer 7440-62-2
History
Diskivery Andrés Manuel del Río (1801)
First isolation Nils Gabriel Sefström (1830)
Named bi Nils Gabriel Sefström (1830)
Main isotopes o vanadium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
48V syn 15.9735 d β+ 48Ti
49V syn 330 d ε 49Ti
50V 0.25% 1.5×1017y ε 2.2083 50Ti
β 1.0369 50Cr
51V 99.75% stable
| references | in Wikidata

Vanadium is a chemical element wi the seembol V an atomic nummer 23. It is a haird, sillery gray, ductile an malleable transeetion metal. The element is foond anly in chemically combined furm in naitur, but ance isolatit airtifeecially, the formation o an oxide layer stabilizes the free metal somewhit against further oxidation.