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Technical data for Ytterbium

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

Overview
NameYtterbium
SymbolYb
Atomic Number70
Atomic Weight173.045
Density6.57 g/cm3
Melting Point819 °C
Boiling Point1196 °C

Thermal properties
PhaseSolid
Melting Point819 °C
Boiling Point1196 °C
Absolute Melting Point1092 K
Absolute Boiling Point1469 K
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion7.7 kJ/mol
Heat of Vaporization160 kJ/mol
Specific Heat154 J/(kg K)[note]
Adiabatic IndexN/A
Neel PointN/A
Thermal Conductivity39 W/(m K)
Thermal Expansion0.0000263 K-1

Bulk physical properties
Density6.57 g/cm3
Density (Liquid)6.21 g/cm3
Molar Volume0.000026339
Brinell Hardness343 MPa
Mohs HardnessN/A
Vickers Hardness206 MPa
Bulk Modulus31 GPa
Shear Modulus10 GPa
Young Modulus24 GPa
Poisson Ratio0.21
Refractive IndexN/A
Speed of Sound1590 m/s
Thermal Conductivity39 W/(m K)
Thermal Expansion0.0000263 K-1

Reactivity
Valence3
ElectronegativityN/A
ElectronAffinity50 kJ/mol
Ionization Energies
603.4, 1174.8, 2417, 4203 kJ/mol

Health and Safety
DOT Hazard ClassN/A
DOT NumbersN/A
RTECS Number
RTECSZG1925000
NFPA LabelN/A

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockf
GroupN/A
Period6
SeriesLanthanide
Electron Configuration[Xe]6s24f14
ColorSilver
Discovery
1878 in Switzerland
Gas phaseN/A
CAS NumberCAS7440-64-4
CID Number
CID23992
RTECS Number
RTECSZG1925000

Electrical properties
Electrical TypeConductor
Electrical Conductivity3.6×106 S/m
Resistivity2.8×10-7 m Ω
Superconducting PointN/A

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility5.9×10-9 m3/Kg
Molar Magnetic Susceptibility1.02×10-9 m3/mol
Volume Magnetic Susceptibility0.0000388

Abundances
% in Universe2×10-7%
% in Sun1×10-7%
% in Meteorites0.000018%
% in Earth's Crust0.00028%
% in Oceans8×10-11%
% in HumansN/A

Atomic dimensions and structure
Atomic Radius222 pm
Covalent Radius187 pm
Van der Waals RadiusN/A
Crystal StructureFace-centered Cubic
Lattice Angles
π/2, π/2, π/2
Lattice Constants
548.47, 548.47, 548.47 pm
Space Group NameFm_ 3m
Space Group Number225

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers1S0
Neutron Cross Section35
Neutron Mass Absorption0.0076
Known Isotopes
148Yb, 149Yb, 150Yb, 151Yb, 152Yb, 153Yb, 154Yb, 155Yb, 156Yb, 157Yb, 158Yb, 159Yb, 160Yb, 161Yb, 162Yb, 163Yb, 164Yb, 165Yb, 166Yb, 167Yb, 168Yb, 169Yb, 170Yb, 171Yb, 172Yb, 173Yb, 174Yb, 175Yb, 176Yb, 177Yb, 178Yb, 179Yb, 180Yb, 181Yb, 182Yb
Stable Isotopes
168Yb, 170Yb, 171Yb, 172Yb, 173Yb, 174Yb, 176Yb
Isotopic Abundances
168Yb0.13%
170Yb3.04%
171Yb14.28%
172Yb21.83%
173Yb16.13%
174Yb31.83%
176Yb12.76%


Notes on the properties of Ytterbium:

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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