Vanadium

Vanadium, ₂₃V

Vanadium
Pronunciation	/vəˈneɪdiəm/ ​(və-NAY-dee-əm)
Appearance	blue-silver-grey metal
Standard atomic weight Ar°(V)
	50.9415(1)
Vanadium in the periodic table
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 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver 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 Mercury (element) Thallium Lead 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson – ↑ V ↓ Nb titanium ← vanadium → chromium
Atomic number (Z)	23
Group	group 5
Period	period 4
Block	d-block
Electron configuration	[Ar] 3d3 4s2
Electrons per shell	2, 8, 11, 2
Physical properties
Phase at STP	solid
Melting point	2183 K ​(1910 °C, ​3470 °F)
Boiling point	3680 K ​(3407 °C, ​6165 °F)
Density (near r.t.)	6.11 g/cm3
when liquid (at m.p.)	5.5 g/cm3
Heat of fusion	21.5 kJ/mol
Heat of vaporization	444 kJ/mol
Molar heat capacity	24.89 J/(mol·K)
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	−3, −1, 0, +1, +2, +3, +4, +5 (an amphoteric oxide)
Electronegativity	Pauling scale: 1.63
Ionization energies	1st: 650.9 kJ/mol 2nd: 1414 kJ/mol 3rd: 2830 kJ/mol (more)
Atomic radius	empirical: 134 pm
Covalent radius	153±8 pm
Spectral lines of vanadium
Other properties
Natural occurrence	primordial
Crystal structure	​body-centered cubic (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 nΩ⋅m (at 20 °C)
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+255.0×10−6 cm3/mol (298 K)
Young's modulus	128 GPa
Shear modulus	47 GPa
Bulk modulus	160 GPa
Poisson ratio	0.37
Mohs hardness	6.7
Vickers hardness	628–640 MPa
Brinell hardness	600–742 MPa
CAS Number	7440-62-2
History
Discovery	Andrés Manuel del Río (1801)
First isolation	Henry Enfield Roscoe (1867)
Named by	Nils Gabriel Sefström (1830)
Isotopes of vanadium v e
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 48V synth 16 d β+ 48Ti 49V synth 330 d ε 49Ti 50V 0.25% 2.71×1017 y ε 50Ti β− 50Cr 51V 99.8% stable
Category: Vanadium view talk edit | references

Vanadium is chemical element 23 on the periodic table. Its symbol is V. It is a metal and is part of the group known as the transition metals. It is gray-blue colored. It is mostly used in steel where it helps strengthen the steel metal. It is named after Vanadis, another name of Freyja.

Vanadium is often found in aquatic forms of life. The human body may need a little bit of vanadium, but scientists are not sure.

Vanadium can react with many other elements, and the chemical compounds it forms often have beautiful colors.

History

Vanadium was found for the first time in 1801 in Mexico by the Spanish mineralogist Andrés Manuel del Río in an ore called "brown lead". He named it panchromium because of the beautiful colors in its chemical compounds. He was told by other people that it was chromium and so he stopped researching it.

In 1831 Swedish chemist Nils Gabriel Sefström found the element in iron ores. The German chemist Friedrich Wöhler said it was the same element that del Río found in 1801. The element was then named vanadium.

Occurrence

The amount of vanadium in the Universe is 0.0001%, making the element almost as common as copper or zinc. Vanadium is detected by spectroscopy in light from the Sun, and sometimes in light from other stars.

Vanadium is the 22nd most common element in the Earth's crust. Metallic vanadium is rare in nature. Vanadium compounds occur naturally in about 65 different minerals. Most of the world's vanadium production comes from vanadium-bearing magnetite found in ultramafic gabbro rocks. Vanadium is mined mostly in South Africa, north-western China, and Eastern Russia. In 2013 these three countries mined more than 97% of the 79,000 tonnes of produced vanadium.

Vanadium is also in bauxite and in deposits of crude oil, coal, oil shale and tar sands.

Properties

Vanadium is soft compared to other metals. It is a good conductor of electricity and heat. It can be pulled out into wires (ductile). Pure vanadium will form a layer of vanadium oxide corrosion very fast.

Uses

A lot of vanadium (85%) is used to make different types of steel. Steel made with vanadium is stronger. It is also mixed with titanium to make metal alloys that are used in jet engines and tooth implants.

Vanadium is also used to make batteries.

References