Vanadium

Atomic Structure

Uses (catalyst, dye, color fixer)

Atomic number	:	23

Atomic mass	:	50.9414 g.mol^-1

Electronegativity according to Pauling	:	1.6

Density	:	6.1g.cm^-3 at 20 °C

Melting point	:	1910 °C

Boiling point	:	3407 °C

Vanderwaals radius	:	0.134 nm

Ionic radius	:	0.074 (+3) nm ; 0.059 (+5) nm

Isotopes	:	5

Electronic shell	:	[Ar] 3d³ 4s²

Energy of first ionisation	:	649.1 kJ.mol^-1

Energy of second ionisation	:	1414 kJ.mol^-1

Energy of third ionisation	:	2830 kJ.mol^-1

Energy of fourth ionisation	:	4652 kJ.mol^-1

Discovered by	:	Nils Sefstrom in 1830