SymbolNd
Latin nameNeodymium
Atomic number60
Period6
Element categoryInner transition elements
Relative atomic mass144.24
GroupIII.B
Electronegativity
1.2
Oxidation numbers
3
Electron configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f4 5d0 6s2
Density [g/cm3]
7.003
State
Solid
Melting point [°C]
1021
Boiling point [°C]
3068
Atomic radius [pm]
206
Thermal conductivity [W m-1K-1]
16.5
Heat capacity [J K-1g-1]
0.19
Discovery
1885
Vickers hardness [MPa]
343
Brinell hardness [MPa]
265
Young's modulus [GPa]
41
Electrical conductivity [S m-1]
1.6 · 106
Shear modulus [GPa]
16
1.st ionization energy [eV]
5.525
2.nd ionization energy [eV]
10.727
3.rd ionization energy [eV]
22.076
Stable isotopes
7
Unstable isotopes
10