Technical data for Neodymium

Overview
NameNeodymium
SymbolNd
Atomic Number60
Atomic Weight144.24
Density7.01 g/cm3
Melting Point1021 °C
Boiling Point3.1×103 °C

Thermal properties
PhaseSolid
Melting Point1021 °C
Boiling Point3.1×103 °C
Absolute Melting Point1294 K
Absolute Boiling Point3373 K
Heat of Fusion7.1 kJ/mol
Heat of Vaporization285 kJ/mol
Heat of CombustionN/A
Specific Heat190 J/(kg K)[note]
Thermal Conductivity17 W/(m K)
Thermal Expansion9.6×10-6 K-1

Bulk physical properties
Density7.01 g/cm3
Density (Liquid)6.89 g/cm3
Molar Volume0.000020576
Brinell Hardness265 MPa
Vickers Hardness343 MPa
Bulk Modulus32 GPa
Shear Modulus16 GPa
Young Modulus41 GPa
Poisson Ratio0.28
Speed of Sound2330 m/s
Thermal Conductivity17 W/(m K)
Thermal Expansion9.6×10-6 K-1

Reactivity
Valence3
Electronegativity1.14
ElectronAffinity50 kJ/mol
Ionization Energies
533.1, 1040, 2130, 3.9×103 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A

Classifications
Alternate NamesNone
Nams of AllotropesNone
Blockf
GroupN/A
Period6
Electron Configuration[Xe]4f46s2
ColorSilver
Discovery
1885 in Austria
Gas phaseN/A
CAS NumberCAS7440-00-8

Electrical properties
Electrical TypeConductor
Electrical Conductivity1.6×106 S/m
Resistivity6.4×10-7 m Ω
Superconducting PointN/A

Magnetic properties
Magnetic TypeParamagnetic
Mass Magnetic Susceptibility4.8×10-7
Molar Magnetic Susceptibility6.9235×10-8
Volume Magnetic Susceptibility0.0033648

Abundances
% in Universe1×10-6%
% in Sun3×10-7%
% in Meteorites0.00005%
% in Earth's Crust0.0033%
% in Oceans2.8×10-10%
% in HumansN/A

Atomic dimensions and structure
Atomic Radius206 pm
Covalent RadiusN/A
Van der Waals RadiusN/A
Crystal StructureSimple Hexagonal
Lattice Angles
π/2, π/2, 2 π/3
Lattice Constants
365.8, 365.8, 1179.9 pm
Space Group NameP63/mmc
Space Group Number194

Nuclear Properties
Half-LifeStable
LifetimeStable
Stable Isotopes
142Nd, 143Nd, 145Nd, 146Nd, 148Nd
Isotopic Abundances
142Nd27.2%
143Nd12.2%
144Nd23.8%
145Nd8.3%
146Nd17.2%
148Nd5.7%
150Nd5.6%

Notes on the properties of Neodymium:
Specific Heat: Value given for solid phase.