Vanadium

23
V
Gruppe
5
Periode
4
Blok
d
Protons
Electrons
Neutrons
23
23
28
General Properties
Atomnummer
23
Atommasse
50,9415
Mass Number
51
Kategori
Overgangsmetaller
Farve
Silver
Radioactive
Nej
Named after Scandinavian goddess, Vanadis
Krystalstruktur
Rumcentreret Kubisk
History
Vanadium was originally discovered by Andrés Manuel del Río in 1801.

In 1805, the French chemist Hippolyte Victor Collet-Descotils incorrectly declared that del Río's new element was only an impure sample of chromium.

In 1831, the Swedish chemist Nils Gabriel Sefström rediscovered the element in a new oxide he found while working with iron ores.

Later that same year, Friedrich Wöhler confirmed del Río's earlier work.
Elektroner i hver skal
2, 8, 11, 2
Elektronkonfiguration
[Ar] 3d3 4s2
V
Vanadium is mined mostly in South Africa, north-western China, and eastern Russia
Physical Properties
Tilstandsform
Fast stof
Massefylde
6,11 g/cm3
Smeltepunkt
2183,15 K | 1910 °C | 3470 °F
Kogepunkt
3680,15 K | 3407 °C | 6164,6 °F
Smeltevarme
22,8 kJ/mol
Fordampningsvarme
453 kJ/mol
Varmefylde
0,489 J/g·K
Abundance in Earth's crust
0,019%
Abundance in Universe
0,0001%
Vanadium
Billede akkrediteringer: Images-of-elements
Vanadium crystals made by electrolysis
CAS Number
7440-62-2
PubChem CID Number
23990
Atomic Properties
Atomradius
134 pm
Kovalent radius
153 pm
Elektronegativitet
1,63 (Paulings skala)
Ionization Potential
6,8281 eV
Atomic Volume
8,78 cm3/mol
Varmeledningsevne
0,307 W/cm·K
Oxidationstrin
-1, 1, 2, 3, 4, 5
Applications
Vanadium is used as an additive in steel to strengthen and protect against corrosion.

Titanium-aluminum-vanadium alloy is used in jet engines and for high-speed aircraft.

Vanadium foil is used in cladding titanium to steel.

Vanadium pentoxide is used in ceramics and as a catalyst for the production of sulfuric acid.
All vanadium compounds should be considered toxic
Isotoper
Stable Isotopes
51V
Unstable Isotopes
40V, 41V, 42V, 43V, 44V, 45V, 46V, 47V, 48V, 49V, 50V, 52V, 53V, 54V, 55V, 56V, 57V, 58V, 59V, 60V, 61V, 62V, 63V, 64V, 65V