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Technical data for Cerium

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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
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion5.5 kJ/mol
Heat of Vaporization350 kJ/mol
Heat of CombustionN/A
Specific Heat192 J/(kg K)[note]
Adiabatic IndexN/A
Neel Point12.5 K
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
Refractive IndexN/A
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
Heat of CombustionN/A
DOT Hazard Class4.1
DOT Numbers1333
EU NumberN/A
NFPA Fire Rating3
NFPA HazardsN/A
NFPA Health Rating2
NFPA Reactivity Rating2
RTECS NumberN/A
NFPA LabelNFPA Label

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockf
GroupN/A
Period6
Electron Configuration[Xe]4f15d16s2
ColorSilver
Discovery
1803 in Germany and Sweden
Gas phaseN/A
CAS NumberCAS7440-45-1
CID NumberCID23974
Gmelin NumberN/A
NSC NumberN/A
RTECS NumberN/A

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
Decay ModeN/A
Quantum Numbers1G4
Neutron Cross Section0.6
Neutron Mass Absorption0.00021
Known Isotopes
119Ce, 120Ce, 121Ce, 122Ce, 123Ce, 124Ce, 125Ce, 126Ce, 127Ce, 128Ce, 129Ce, 130Ce, 131Ce, 132Ce, 133Ce, 134Ce, 135Ce, 136Ce, 137Ce, 138Ce, 139Ce, 140Ce, 141Ce, 142Ce, 143Ce, 144Ce, 145Ce, 146Ce, 147Ce, 148Ce, 149Ce, 150Ce, 151Ce, 152Ce, 153Ce, 154Ce, 155Ce, 156Ce, 157Ce
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.

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

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