Technical data for Palladium

Overview Name Palladium Symbol Pd Atomic Number 46 Atomic Weight 106.42 Density 12.023 g/cm3 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 1828.05 K Absolute Boiling Point 3236 K Critical Pressure N/A Critical Temperature N/A Heat of Fusion 16.7 kJ/mol Heat of Vaporization 380 kJ/mol Specific Heat 240 J/(kg K)[note] Adiabatic Index N/A Neel Point N/A Thermal Conductivity 71 W/(m K) Thermal Expansion 0.0000118 K-1 Bulk physical properties Density 12.023 g/cm3 Density (Liquid) 10.38 g/cm3 Molar Volume 8.8514×10-6 Brinell Hardness 37.2 MPa Mohs Hardness 4.75 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 71 W/(m K) Thermal Expansion 0.0000118 K-1 Reactivity Valence 4 Electronegativity 2.2 ElectronAffinity 53.7 kJ/mol Ionization Energies 804.4, 1870, 3177 kJ/mol Health and Safety DOT Hazard Class 4.2 DOT Numbers 3200 RTECS Number RTECSRT3480500 NFPA Label

Classifications Alternate Names None Names of Allotropes None Block d Group 10 Period 5 Series Transition Metal Electron Configuration [Kr]4d10 Color Silver Discovery 1803 in The United Kingdom Gas phase N/A CAS Number CAS7440-05-3 CID Number CID23938 RTECS Number RTECSRT3480500 Electrical properties Electrical Type Conductor Electrical Conductivity 1×107 S/m Resistivity 1×10-7 m Ω Superconducting Point N/A Magnetic properties Magnetic Type Paramagnetic Curie Point N/A Mass Magnetic Susceptibility 6.57×10-8 m3/Kg Molar Magnetic Susceptibility 6.992×10-9 m3/mol Volume Magnetic Susceptibility 0.0007899 Abundances % in Universe 2×10-7% % in Sun 3×10-7% % in Meteorites 0.000065% % 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 139 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%