SymbolV
Latin nameVanadium
Atomic number23
Period4
Element categoryTransition elements
Relative atomic mass50.9415
GroupV.B
Electronegativity
1.6
Oxidation numbers
2, 3, 4, 5
Electron configuration
1s2 2s2 2p6 3s2 3p6 3d3 4s2
Density [g/cm3]
6.11
State
Solid
Melting point [°C]
1900
Boiling point [°C]
3380
Atomic radius [pm]
171
Covalent radius [pm]
125
Thermal conductivity [W m-1K-1]
30.7
Heat capacity [J K-1g-1]
0.489
Discovery
1801
Hardness [Mohs scale]
6-7
Vickers hardness [MPa]
628
Brinell hardness [MPa]
628
Young's modulus [GPa]
128
Electrical conductivity [S m-1]
4 · 106
Shear modulus [GPa]
47
1.st ionization energy [eV]
6.7463
2.nd ionization energy [eV]
14.65
3.rd ionization energy [eV]
29.31
Stable isotopes
2
Unstable isotopes
5