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Technical data for Lawrencium

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

Overview
NameLawrencium
SymbolLr
Atomic Number103
Atomic Weight262[note]
DensityN/A
Melting Point1627 °C
Boiling PointN/A

Thermal properties
PhaseN/A
Melting Point1627 °C
Boiling PointN/A
Absolute Melting Point1.9×103 K
Absolute Boiling PointN/A
Critical PressureN/A
Critical TemperatureN/A
Heat of FusionN/A
Heat of VaporizationN/A
Heat of CombustionN/A
Specific HeatN/A
Adiabatic IndexN/A
Neel PointN/A
Thermal ConductivityN/A
Thermal ExpansionN/A

Bulk physical properties
DensityN/A
Density (Liquid)N/A
Molar VolumeN/A
Brinell HardnessN/A
Mohs HardnessN/A
Vickers HardnessN/A
Bulk ModulusN/A
Shear ModulusN/A
Young ModulusN/A
Poisson RatioN/A
Refractive IndexN/A
Speed of SoundN/A
Thermal ConductivityN/A
Thermal ExpansionN/A

Reactivity
Valence3
ElectronegativityN/A
ElectronAffinityN/A
Ionization EnergiesN/A

Health and Safety
Autoignition PointN/A
FlashpointN/A
Heat of CombustionN/A
DOT Hazard ClassN/A
DOT NumbersN/A
EU NumberN/A
NFPA Fire RatingN/A
NFPA HazardsN/A
NFPA Health RatingN/A
NFPA Reactivity RatingN/A
RTECS NumberN/A
NFPA LabelN/A

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockd
Group3
Period7
Electron Configuration[Rn]5f147s27p1
ColorN/A
Discovery
1961 in United States
Gas phaseN/A
CAS NumberCAS22537-19-5
CID NumberN/A
Gmelin NumberN/A
NSC NumberN/A
RTECS NumberN/A

Electrical properties
Electrical TypeN/A
Electrical ConductivityN/A
ResistivityN/A
Superconducting PointN/A

Magnetic properties
Magnetic TypeN/A
Curie PointN/A
Mass Magnetic SusceptibilityN/A
Molar Magnetic SusceptibilityN/A
Volume Magnetic SusceptibilityN/A

Abundances
% in UniverseN/A
% in SunNone
% in MeteoritesNone
% in Earth's CrustNone
% in OceansNone
% in HumansNone

Atomic dimensions and structure
Atomic RadiusN/A
Covalent RadiusN/A
Van der Waals RadiusN/A
Crystal StructureN/A
Lattice AnglesN/A
Lattice ConstantsN/A
Space Group NameN/A
Space Group NumberN/A

Nuclear Properties
Half-Life10 h
Lifetime14.4 h
Decay ModeAlphaEmission
Quantum Numbers2P1/2
Neutron Cross SectionN/A
Neutron Mass AbsorptionN/A
Known Isotopes
251Lr, 252Lr, 253Lr, 254Lr, 255Lr, 256Lr, 257Lr, 258Lr, 259Lr, 260Lr, 261Lr, 262Lr, 263Lr, 264Lr, 265Lr, 266Lr
Stable Isotopes
Isotopic Abundances


Notes on the properties of Lawrencium:

Atomic Weight: Atomic mass number given for longest lived isotope.

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

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