Technical data for Palladium

Overview Name Palladium Symbol Pd Atomic Number 46 Atomic Weight 106.42 Density 12.023 g/cc Melting Point 1554.9°C Boiling Point 2963.°C Thermal properties Phase Solid Melting Point 1554.9°C Boiling Point 2963.°C Absolute Melting Point 1828.05K Absolute Boiling Point 3236.K Critical Pressure N/A Critical Temperature N/A Heat of Fusion 16.7KJ/mol Heat of Vaporization 380.KJ/mol Heat of Combustion N/A Specific Heat 240.J/(Kg K)[note] Adiabatic Index N/A Neel Point N/A Thermal Conductivity 72.W/(m K) Thermal Expansion 0.0000118K-1 Bulk physical properties Density 12.023 g/cc Density (Liquid) 10.38 g/cc Molar Volume 8.8514×10-6 Brinell Hardness 37.3MPa Mohs Hardness 4.75MPa Vickers Hardness 461.MPa Bulk Modulus 180.GPa Shear Modulus 44.GPa Young Modulus 121.GPa Poisson Ratio 0.39 Refractive Index N/A Speed of Sound 3070.m/s Thermal Conductivity 72.W/(m K) Thermal Expansion 0.0000118K-1 Reactivity Valence 4 Electronegativity 2.2 ElectronAffinity 53.7KJ/mol Ionization Energies 804.4, 1870., 3177. KJ/mol Health and Safety Autoignition Point N/A Flashpoint N/A Heat of Combustion N/A DOT Hazard Class 4.2 DOT Numbers 3200 EU Number EU231-115-6 NFPA Fire Rating 0 NFPA Hazards N/A NFPA Health Rating 1 NFPA Reactivity Rating 0 RTECS Classes Other RTECS Number RTECSRT3480500 NFPA Label

Classifications Alternate Names None Names of Allotropes None Block d Group 10 Period 5 Electron Configuration [Kr]4d10 Color Silver Discovery 1803 in United Kingdom Gas phase N/A CAS Number 7440-05-3 CID Number CID23938 Gmelin Number Gmelin16239 NSC Number N/A RTECS Number RTECSRT3480500 Electrical properties Electrical Type Conductor Electrical Conductivity 1.×107S/m Resistivity 1.×10-7m Ω Superconducting Point N/A Magnetic properties Magnetic Type Paramagnetic Curie Point N/A Mass Magnetic Susceptibility 6.57×10-8 Molar Magnetic Susceptibility 6.992×10-9 Volume Magnetic Susceptibility 0.0007899 Abundances % in Universe 2.×10-7% % in Sun 3.×10-7% % in Meteorites 0.000066% % in Earth's Crust 6.3×10-7% % in Oceans N/A % in Humans N/A Atomic dimensions and structure Atomic Radius 169.pm Covalent Radius 131.pm Van der Waals Radius 163.pm Crystal Structure Face Centered Cubic Lattice Angles π/2, π/2, π/2 Lattice Constants 389.07, 389.07, 389.07 pm Space Group Name Fm_ 3m Space Group Number 225 Nuclear Properties Half-Life Stable Lifetime Stable Decay Mode N/A Quantum Numbers 1S0 Neutron Cross Section 6.9 Neutron Mass Absorption 0.0023 Known Isotopes 91Pd, 92Pd, 93Pd, 94Pd, 95Pd, 96Pd, 97Pd, 98Pd, 99Pd, 100Pd, 101Pd, 102Pd, 103Pd, 104Pd, 105Pd, 106Pd, 107Pd, 108Pd, 109Pd, 110Pd, 111Pd, 112Pd, 113Pd, 114Pd, 115Pd, 116Pd, 117Pd, 118Pd, 119Pd, 120Pd, 121Pd, 122Pd, 123Pd, 124Pd Stable Isotopes 102Pd, 104Pd, 105Pd, 106Pd, 108Pd, 110Pd Isotopic Abundances 102Pd 1.02% 104Pd 11.14% 105Pd 22.33% 106Pd 27.33% 108Pd 26.46% 110Pd 11.72%