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Technical data for Lithium

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Overview
NameLithium
SymbolLi
Atomic Number3
Atomic Weight6.941
Density0.535 g/cm3
Melting Point180.54 °C
Boiling Point1342 °C

Thermal properties
PhaseSolid
Melting Point180.54 °C
Boiling Point1342 °C
Absolute Melting Point453.69 K
Absolute Boiling Point1615 K
Critical Pressure67 MPa (661.2 Atm)[note]
Critical Temperature3223 K[note]
Heat of Fusion3 kJ/mol
Heat of Vaporization147 kJ/mol
Heat of Combustion-298 J/(kg K)
Specific Heat3570 J/(kg K)[note]
Adiabatic IndexN/A
Neel PointN/A
Thermal Conductivity85 W/(m K)
Thermal Expansion0.000046 K-1

Bulk physical properties
Density0.535 g/cm3
Density (Liquid)0.512 g/cm3
Molar Volume0.00001297
Brinell HardnessN/A
Mohs Hardness0.6 MPa
Vickers HardnessN/A
Bulk Modulus11 GPa
Shear Modulus4.2 GPa
Young Modulus4.9 GPa
Poisson RatioN/A
Refractive IndexN/A
Speed of Sound6×103 m/s
Thermal Conductivity85 W/(m K)
Thermal Expansion0.000046 K-1

Reactivity
Valence1
Electronegativity0.98
ElectronAffinity59.6 kJ/mol
Ionization Energies
520.2, 7298.1, 11815 kJ/mol

Health and Safety
Autoignition Point179 °C
FlashpointN/A
Heat of Combustion-298 J/(kg K)
DOT Hazard Class4.3
DOT Numbers1415
EU NumberN/A
NFPA Fire Rating2
NFPA Hazards
Water Reactive
NFPA Health Rating3
NFPA Reactivity Rating2
RTECS NumberRTECSOJ5540000
NFPA LabelNFPA Label

Classifications
Alternate NamesNone
Names of AllotropesNone
Blocks
Group1
Period2
Electron Configuration[He]2s1
ColorSilver
Discovery
1817 in Sweden
Gas phaseN/A
CAS NumberCAS7439-93-2
CID NumberCID3028194
Gmelin NumberN/A
NSC NumberN/A
RTECS NumberRTECSOJ5540000

Electrical properties
Electrical TypeConductor
Electrical Conductivity1.1×107 S/m
Resistivity9.4×10-8 m Ω
Superconducting PointN/A

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility2.56×10-8
Molar Magnetic Susceptibility1.78×10-10
Volume Magnetic Susceptibility1.37×10-6

Abundances
% in Universe6×10-7%
% in Sun6×10-9%
% in Meteorites0.00017%
% in Earth's Crust0.0017%
% in Oceans0.000018%
% in Humans3×10-6%

Atomic dimensions and structure
Atomic Radius167 pm
Covalent Radius134 pm
Van der Waals Radius182 pm
Crystal StructureBody Centered Cubic
Lattice Angles
π/2, π/2, π/2
Lattice Constants
351, 351, 351 pm
Space Group NameIm_ 3m
Space Group Number229

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers2S1/2
Neutron Cross Section0.045
Neutron Mass AbsorptionN/A
Known Isotopes
3Li, 4Li, 5Li, 6Li, 7Li, 8Li, 9Li, 10Li, 11Li, 12Li
Stable Isotopes
6Li, 7Li
Isotopic Abundances
6Li7.59%
7Li92.41%


Notes on the properties of Lithium:

Critical Pressure: Value estimated based on extrapolation.

Critical Temperature: Value estimated based on extrapolation.

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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