Technical data for Lithium

Overview Name Lithium Symbol Li Atomic Number 3 Atomic Weight 6.941 Density 0.535 g/cc Melting Point 180.54°C Boiling Point 1342.°C Thermal properties Phase Solid Melting Point 180.54°C Boiling Point 1342.°C Absolute Melting Point 453.69K Absolute Boiling Point 1615.K Critical Pressure 67.MPa (661.2Atm)[note] Critical Temperature 3223.K[note] Heat of Fusion 3.KJ/mol Heat of Vaporization 147.KJ/mol Heat of Combustion -298.J/(Kg K) Specific Heat 3570.J/(Kg K)[note] Adiabatic Index N/A Neel Point N/A Thermal Conductivity 85.W/(m K) Thermal Expansion 0.000046K-1 Bulk physical properties Density 0.535 g/cc Density (Liquid) 0.512 g/cc Molar Volume 0.00001297 Brinell Hardness N/A Mohs Hardness 0.6MPa Vickers Hardness N/A Bulk Modulus 11.GPa Shear Modulus 4.2GPa Young Modulus 4.9GPa Poisson Ratio N/A Refractive Index N/A Speed of Sound 6.×103m/s Thermal Conductivity 85.W/(m K) Thermal Expansion 0.000046K-1 Reactivity Valence 1 Electronegativity 0.98 ElectronAffinity 59.6KJ/mol Ionization Energies 520.2, 7298.1, 11815. KJ/mol Health and Safety Autoignition Point 179.°C Flashpoint N/A Heat of Combustion -298.J/(Kg K) DOT Hazard Class 4.3 DOT Numbers 1415 EU Number EU231-102-5 NFPA Fire Rating 2 NFPA Hazards Water Reactive NFPA Health Rating 3 NFPA Reactivity Rating 2 RTECS Classes Mutagen RTECS Number RTECSOJ5540000 NFPA Label

Classifications Alternate Names None Names of Allotropes None Block s Group 1 Period 2 Electron Configuration [He]2s1 Color Silver Discovery 1817 in Sweden Gas phase N/A CAS Number CAS7439-93-2 CID Number CID3028194 Gmelin Number Gmelin30 NSC Number N/A RTECS Number RTECSOJ5540000 Electrical properties Electrical Type Conductor Electrical Conductivity 1.1×107S/m Resistivity 9.4×10-8m Ω Superconducting Point N/A Magnetic properties Magnetic Type Paramagnetic Curie Point N/A Mass Magnetic Susceptibility 6.3×10-9 Molar Magnetic Susceptibility 4.37×10-11 Volume Magnetic Susceptibility 3.37×10-6 Abundances % in Universe 6.×10-7% % in Sun 6.×10-9% % in Meteorites 0.00017% % in Earth's Crust 0.0017% % in Oceans 0.000018% % in Humans 3.×10-6% Atomic dimensions and structure Atomic Radius 167.pm Covalent Radius 134.pm Van der Waals Radius 182.pm Crystal Structure Body Centered Cubic Lattice Angles π/2, π/2, π/2 Lattice Constants 351., 351., 351. pm Space Group Name Im_ 3m Space Group Number 229 Nuclear Properties Half-Life Stable Lifetime Stable Decay Mode N/A Quantum Numbers 2S1/2 Neutron Cross Section 0.045 Neutron Mass Absorption N/A Known Isotopes 3Li, 4Li, 5Li, 6Li, 7Li, 8Li, 9Li, 10Li, 11Li, 12Li Stable Isotopes 6Li, 7Li Isotopic Abundances 6Li 7.59% 7Li 92.41%