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Neodymium
Electron Configuration 2,8,18,22,8,2
Electron Configuration [Xe]] 4f4 6s2
Electronegativity 1.14
Enthalpy of Fusion 7.11 kJ mol-1
Enthalpy of Vaporisation 328 kJ mol-1
Heat Capacity 27.45 J mol-1 K-1
Thermal Conductivity 16.5 W m-1 K-1
Thermal Expansion 9.6 μm m-1 K-1
Magnetic ordering Ferromagnetic
Electrical resistivity 643 Ω m
Speed of sound 2330 m s-1
Young's modulus 41.4 GPa
Shear modulus 2330 GPa
Bulk modulus 31.8 GPa
Poisson ratio 0.281
Vickers hardness 343 MPa
Brinell hardness 265 MPa
Atomic Radii
Atomic Radius 185 pm
Bohr Radius 206 pm
Covalent Radius 0 pm
Van der Waals 0 pm
Oxidation States
Main Nd+3
Other Nd+2, Nd+4
Ionisation Energies (kJ mol-1) show graph
M - M+ 529.6
M+ - M2+ 1035
M2+ - M3+ 2130
M3+ - M4+ 3899