Technical data for Copper

Overview Name Copper Symbol Cu Atomic Number 29 Atomic Weight 63.546 Density 8.92 g/cc Melting Point 1084.62°C Boiling Point 2927.°C Thermal properties Phase Solid Melting Point 1084.62°C Boiling Point 2927.°C Absolute Melting Point 1357.77K Absolute Boiling Point 3.2×103K Critical Pressure N/A Critical Temperature N/A Heat of Fusion 13.1KJ/mol Heat of Vaporization 300.KJ/mol Heat of Combustion N/A Specific Heat 384.4J/(Kg K)[note] Adiabatic Index N/A Neel Point N/A Thermal Conductivity 400.W/(m K) Thermal Expansion 0.0000165K-1 Bulk physical properties Density 8.92 g/cc Density (Liquid) 8.02 g/cc Molar Volume 7.124×10-6 Brinell Hardness 874.MPa Mohs Hardness 3.MPa Vickers Hardness 369.MPa Bulk Modulus 140.GPa Shear Modulus 48.GPa Young Modulus 130.GPa Poisson Ratio 0.34 Refractive Index N/A Speed of Sound 3570.m/s Thermal Conductivity 400.W/(m K) Thermal Expansion 0.0000165K-1 Reactivity Valence 2 Electronegativity 1.9 ElectronAffinity 118.4KJ/mol Ionization Energies 745.5, 1957.9, 3555., 5536., 7.7×103, 9.9×103, 1.34×104, 1.6×104, 1.92×104, 2.24×104, 2.56×104, 3.56×104, 3.87×104, 4.2×104, 4.67×104, 5.02×104, 5.37×104, 6.11×104, 64702., 1.637×105, 1.741×105 KJ/mol Health and Safety Autoignition Point N/A Flashpoint N/A Heat of Combustion N/A DOT Hazard Class 4.1 DOT Numbers 3089 EU Number EU231-159-6 NFPA Fire Rating 1 NFPA Hazards N/A NFPA Health Rating 1 NFPA Reactivity Rating 0 RTECS Classes Tumorigen, Reproductive Effector, Human Data RTECS Number RTECSGL5325000 NFPA Label

Classifications Alternate Names Cuprum Names of Allotropes None Block d Group 11 Period 4 Electron Configuration [Ar]3d104s1 Color Copper Discovery 8000BC Gas phase N/A CAS Number CAS7440-50-8 CID Number CID27099 Gmelin Number Gmelin16269 NSC Number N/A RTECS Number RTECSGL5325000 Electrical properties Electrical Type Conductor Electrical Conductivity 5.9×107S/m Resistivity 1.7×10-8m Ω Superconducting Point N/A Magnetic properties Magnetic Type Diamagnetic Curie Point N/A Mass Magnetic Susceptibility -1.08×10-9 Molar Magnetic Susceptibility -6.86×10-11 Volume Magnetic Susceptibility -9.63×10-6 Abundances % in Universe 6.×10-6% % in Sun 0.00007% % in Meteorites 0.011% % in Earth's Crust 0.0068% % in Oceans 3.×10-7% % in Humans 0.0001% Atomic dimensions and structure Atomic Radius 145.pm Covalent Radius 138.pm Van der Waals Radius 140.pm Crystal Structure Face Centered Cubic Lattice Angles π/2, π/2, π/2 Lattice Constants 361.49, 361.49, 361.49 pm Space Group Name Fm_ 3m Space Group Number 225 Nuclear Properties Half-Life Stable Lifetime Stable Decay Mode N/A Quantum Numbers 2S1/2 Neutron Cross Section 3.78 Neutron Mass Absorption 0.0021 Known Isotopes 52Cu, 53Cu, 54Cu, 55Cu, 56Cu, 57Cu, 58Cu, 59Cu, 60Cu, 61Cu, 62Cu, 63Cu, 64Cu, 65Cu, 66Cu, 67Cu, 68Cu, 69Cu, 70Cu, 71Cu, 72Cu, 73Cu, 74Cu, 75Cu, 76Cu, 77Cu, 78Cu, 79Cu, 80Cu Stable Isotopes 63Cu, 65Cu Isotopic Abundances 63Cu 69.17% 65Cu 30.83%