Technical data for Cerium

Overview
NameCerium
SymbolCe
Atomic Number58
Atomic Weight140.116
Density6.689 g/cm3
Melting Point798 °C
Boiling Point3360 °C

Thermal properties
PhaseSolid
Melting Point798 °C
Boiling Point3360 °C
Absolute Melting Point1071 K
Absolute Boiling Point3633 K
Heat of Fusion5.5 kJ/mol
Heat of Vaporization350 kJ/mol
Heat of CombustionN/A
Specific Heat192 J/(kg K)[note]
Thermal Conductivity11 W/(m K)
Thermal Expansion6.3×10-6 K-1

Bulk physical properties
Density6.689 g/cm3
Density (Liquid)6.55 g/cm3
Molar Volume0.000020947
Brinell Hardness412 MPa
Mohs Hardness2.5 MPa
Vickers Hardness270 MPa
Bulk Modulus22 GPa
Shear Modulus14 GPa
Young Modulus34 GPa
Poisson Ratio0.24
Speed of Sound2.1×103 m/s
Thermal Conductivity11 W/(m K)
Thermal Expansion6.3×10-6 K-1

Reactivity
Valence4
Electronegativity1.12
ElectronAffinity50 kJ/mol
Ionization Energies
534.4, 1050, 1949, 3547, 6325, 7490 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A

Classifications
Alternate NamesNone
Nams of AllotropesNone
Blockf
GroupN/A
Period6
Electron Configuration[Xe]4f15d16s2
ColorSilver
Discovery
1803 in Germany and Sweden
Gas phaseN/A
CAS NumberCAS7440-45-1

Electrical properties
Electrical TypeConductor
Electrical Conductivity1.4×106 S/m
Resistivity7.4×10-7 m Ω
Superconducting Point0.022

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility2.2×10-7
Molar Magnetic Susceptibility3.0826×10-8
Volume Magnetic Susceptibility0.0014716

Abundances
% in Universe1×10-6%
% in Sun4×10-7%
% in Meteorites0.000075%
% in Earth's Crust0.006%
% in Oceans1.2×10-10%
% in HumansN/A

Atomic dimensions and structure
Atomic RadiusN/A
Covalent RadiusN/A
Van der Waals RadiusN/A
Crystal StructureSimple Hexagonal
Lattice Angles
π/2, π/2, 2 π/3
Lattice Constants
362, 362, 599 pm
Space Group NameP63/mmc
Space Group Number194

Nuclear Properties
Half-LifeStable
LifetimeStable
Stable Isotopes
136Ce, 138Ce, 140Ce, 142Ce
Isotopic Abundances
136Ce0.185%
138Ce0.251%
140Ce88.45%
142Ce11.114%

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