Technical data for Gallium

Overview Name Gallium Symbol Ga Atomic Number 31 Atomic Weight 69.723 Density 5.904 g/cc Melting Point 29.76°C Boiling Point 2204.°C Thermal properties Phase Solid Melting Point 29.76°C Boiling Point 2204.°C Absolute Melting Point 302.91K Absolute Boiling Point 2477.K Critical Pressure N/A Critical Temperature N/A Heat of Fusion 5.59KJ/mol Heat of Vaporization 256.KJ/mol Heat of Combustion N/A Specific Heat 371.J/(Kg K)[note] Adiabatic Index N/A Neel Point N/A Thermal Conductivity 29.W/(m K) Thermal Expansion 0.00012K-1 Bulk physical properties Density 5.904 g/cc Density (Liquid) 6.095 g/cc Molar Volume 0.000011809 Brinell Hardness 60.MPa Mohs Hardness 1.5MPa Vickers Hardness N/A Bulk Modulus N/A Shear Modulus N/A Young Modulus N/A Poisson Ratio N/A Refractive Index N/A Speed of Sound 2740.m/s Thermal Conductivity 29.W/(m K) Thermal Expansion 0.00012K-1 Reactivity Valence 3 Electronegativity 1.81 ElectronAffinity 28.9KJ/mol Ionization Energies 578.8, 1979.3, 2963., 6180. KJ/mol Health and Safety Autoignition Point N/A Flashpoint N/A Heat of Combustion N/A DOT Hazard Class 8 DOT Numbers 2803 EU Number EU231-163-8 NFPA Fire Rating 0 NFPA Hazards N/A NFPA Health Rating 1 NFPA Reactivity Rating 0 RTECS Classes Mutagen RTECS Number RTECSLW8600000 NFPA Label

Classifications Alternate Names None Names of Allotropes None Block p Group 13 Period 4 Electron Configuration [Ar]3d104s24p1 Color Silver Discovery 1875 in France Gas phase N/A CAS Number CAS7440-55-3 CID Number CID5360835 Gmelin Number Gmelin16287 NSC Number N/A RTECS Number RTECSLW8600000 Electrical properties Electrical Type Conductor Electrical Conductivity 7.1×106S/m Resistivity 1.4×10-7m Ω Superconducting Point 1.083 Magnetic properties Magnetic Type Diamagnetic Curie Point N/A Mass Magnetic Susceptibility -3.×10-9 Molar Magnetic Susceptibility -2.09×10-10 Volume Magnetic Susceptibility -0.0000177 Abundances % in Universe 1.×10-6% % in Sun 4.×10-6% % in Meteorites 0.00076% % in Earth's Crust 0.0019% % in Oceans 3.×10-9% % in Humans N/A Atomic dimensions and structure Atomic Radius 136.pm Covalent Radius 126.pm Van der Waals Radius 187.pm Crystal Structure Base Centered Orthorhombic Lattice Angles π/2, π/2, π/2 Lattice Constants 451.97, 766.33, 452.6 pm Space Group Name Cmca Space Group Number 64 Nuclear Properties Half-Life Stable Lifetime Stable Decay Mode N/A Quantum Numbers 2P1/2 Neutron Cross Section 2.9 Neutron Mass Absorption 0.0015 Known Isotopes 56Ga, 57Ga, 58Ga, 59Ga, 60Ga, 61Ga, 62Ga, 63Ga, 64Ga, 65Ga, 66Ga, 67Ga, 68Ga, 69Ga, 70Ga, 71Ga, 72Ga, 73Ga, 74Ga, 75Ga, 76Ga, 77Ga, 78Ga, 79Ga, 80Ga, 81Ga, 82Ga, 83Ga, 84Ga, 85Ga, 86Ga Stable Isotopes 69Ga, 71Ga Isotopic Abundances 69Ga 60.108% 71Ga 39.892%