Technical data for Silver

Overview Name Silver Symbol Ag Atomic Number 47 Atomic Weight 107.8682 Density 10.49 g/cm3 Melting Point 961.78 °C Boiling Point 2162 °C Thermal properties Phase Solid Melting Point 961.78 °C Boiling Point 2162 °C Absolute Melting Point 1234.93 K Absolute Boiling Point 2435 K Critical Pressure N/A Critical Temperature N/A Heat of Fusion 11.3 kJ/mol Heat of Vaporization 255 kJ/mol Specific Heat 235 J/(kg K)[note] Adiabatic Index N/A Neel Point N/A Thermal Conductivity 430 W/(m K) Thermal Expansion 0.0000189 K-1 Bulk physical properties Density 10.49 g/cm3 Density (Liquid) 9.32 g/cm3 Molar Volume 0.000010283 Brinell Hardness 24.5 MPa Mohs Hardness 2.5 Vickers Hardness 251 MPa Bulk Modulus 100 GPa Shear Modulus 30 GPa Young Modulus 85 GPa Poisson Ratio 0.37 Refractive Index N/A Speed of Sound 2600 m/s Thermal Conductivity 430 W/(m K) Thermal Expansion 0.0000189 K-1 Reactivity Valence 1 Electronegativity 1.93 ElectronAffinity 125.6 kJ/mol Ionization Energies 731, 2070, 3361 kJ/mol Health and Safety DOT Hazard Class N/A DOT Numbers N/A RTECS Number RTECSVW3500000 NFPA Label

Classifications Alternate Names Argentum Names of Allotropes None Block d Group 11 Period 5 Series Transition Metal Electron Configuration [Kr]5s14d10 Color Silver Discovery 3000 BC Gas phase N/A CAS Number CAS7440-22-4 CID Number CID23954 RTECS Number RTECSVW3500000 Electrical properties Electrical Type Conductor Electrical Conductivity 6.2×107 S/m Resistivity 1.6×10-8 m Ω Superconducting Point N/A Magnetic properties Magnetic Type Diamagnetic Curie Point N/A Mass Magnetic Susceptibility -2.27×10-9 m3/Kg Molar Magnetic Susceptibility -2.45×10-10 m3/mol Volume Magnetic Susceptibility -0.0000238 Abundances % in Universe 6×10-8% % in Sun 1×10-7% % in Meteorites 0.000014% % in Earth's Crust 7.9×10-6% % in Oceans 1×10-8% % in Humans N/A Atomic dimensions and structure Atomic Radius 165 pm Covalent Radius 145 pm Van der Waals Radius 172 pm Crystal Structure Face-centered Cubic Lattice Angles π/2, π/2, π/2 Lattice Constants 408.53, 408.53, 408.53 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 63.6 Neutron Mass Absorption 0.02 Known Isotopes 93Ag, 94Ag, 95Ag, 96Ag, 97Ag, 98Ag, 99Ag, 100Ag, 101Ag, 102Ag, 103Ag, 104Ag, 105Ag, 106Ag, 107Ag, 108Ag, 109Ag, 110Ag, 111Ag, 112Ag, 113Ag, 114Ag, 115Ag, 116Ag, 117Ag, 118Ag, 119Ag, 120Ag, 121Ag, 122Ag, 123Ag, 124Ag, 125Ag, 126Ag, 127Ag, 128Ag, 129Ag, 130Ag Stable Isotopes 107Ag, 109Ag Isotopic Abundances 107Ag 51.839% 109Ag 48.161%