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Technical data for Neodymium

Click any property name to see plots of that property for all the elements.

Overview
NameNeodymium
SymbolNd
Atomic Number60
Atomic Weight144.242
Density7.01 g/cm3
Melting Point1021 °C
Boiling Point3100 °C

Thermal properties
PhaseSolid
Melting Point1021 °C
Boiling Point3100 °C
Absolute Melting Point1294 K
Absolute Boiling Point3373 K
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion7.1 kJ/mol
Heat of Vaporization285 kJ/mol
Specific Heat190 J/(kg K)[note]
Adiabatic IndexN/A
Neel Point19.2 K
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 Volume0.000020577
Brinell Hardness265 MPa
Mohs Hardness1.23[note]
Vickers Hardness343 MPa
Bulk Modulus32 GPa
Shear Modulus16 GPa
Young Modulus41 GPa
Poisson Ratio0.28
Refractive IndexN/A
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, 3900 kJ/mol

Health and Safety
DOT Hazard ClassN/A
DOT NumbersN/A
RTECS Number
RTECSQO8575000
NFPA LabelN/A

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockf
GroupN/A
Period6
SeriesLanthanide
Electron Configuration[Xe]6s24f4
ColorSilver
Discovery
1885 in Austria
Gas phaseN/A
CAS NumberCAS7440-00-8
CID Number
CID23934
RTECS Number
RTECSQO8575000

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

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility4.8×10-7 m3/Kg
Molar Magnetic Susceptibility6.9235×10-8 m3/mol
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 Radius201 pm
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
Decay ModeN/A
Quantum Numbers5I4
Neutron Cross Section49
Neutron Mass Absorption0.011
Known Isotopes
124Nd, 125Nd, 126Nd, 127Nd, 128Nd, 129Nd, 130Nd, 131Nd, 132Nd, 133Nd, 134Nd, 135Nd, 136Nd, 137Nd, 138Nd, 139Nd, 140Nd, 141Nd, 142Nd, 143Nd, 144Nd, 145Nd, 146Nd, 147Nd, 148Nd, 149Nd, 150Nd, 151Nd, 152Nd, 153Nd, 154Nd, 155Nd, 156Nd, 157Nd, 158Nd, 159Nd, 160Nd, 161Nd
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:

Mohs Hardness: converted from Vickers scale

Specific Heat: Value given for solid phase.

Up to date, curated data provided by Mathematica's ElementData function from Wolfram Research, Inc.

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