Technical data for Palladium

Overview
NamePalladium
SymbolPd
Atomic Number46
Atomic Weight106.42
Density12.023 g/cm3
Melting Point1554.9 °C
Boiling Point2963 °C

Thermal properties
PhaseSolid
Melting Point1554.9 °C
Boiling Point2963 °C
Absolute Melting Point1828.05 K
Absolute Boiling Point3236 K
Heat of Fusion16.7 kJ/mol
Heat of Vaporization380 kJ/mol
Heat of CombustionN/A
Specific Heat240 J/(kg K)[note]
Thermal Conductivity72 W/(m K)
Thermal Expansion0.0000118 K-1

Bulk physical properties
Density12.023 g/cm3
Density (Liquid)10.38 g/cm3
Molar Volume8.8514×10-6
Brinell Hardness37.3 MPa
Mohs Hardness4.75 MPa
Vickers Hardness461 MPa
Bulk Modulus180 GPa
Shear Modulus44 GPa
Young Modulus121 GPa
Poisson Ratio0.39
Speed of Sound3070 m/s
Thermal Conductivity72 W/(m K)
Thermal Expansion0.0000118 K-1

Reactivity
Valence4
Electronegativity2.2
ElectronAffinity53.7 kJ/mol
Ionization Energies
804.4, 1870, 3177 kJ/mol

Health and Safety
Autoignition PointN/A
FlashpointN/A

Classifications
Alternate NamesNone
Nams of AllotropesNone
Blockd
Group10
Period5
Electron Configuration[Kr]4d10
ColorSilver
Discovery
1803 in United Kingdom
Gas phaseN/A
CAS NumberCAS7440-05-3

Electrical properties
Electrical TypeConductor
Electrical Conductivity1×107 S/m
Resistivity1×10-7 m Ω
Superconducting PointN/A

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility6.57×10-8
Molar Magnetic Susceptibility6.992×10-9
Volume Magnetic Susceptibility0.0007899

Abundances
% in Universe2×10-7%
% in Sun3×10-7%
% in Meteorites0.000066%
% in Earth's Crust6.3×10-7%
% in OceansN/A
% in HumansN/A

Atomic dimensions and structure
Atomic Radius169 pm
Covalent Radius131 pm
Van der Waals Radius163 pm
Crystal StructureFace Centered Cubic
Lattice Angles
π/2, π/2, π/2
Lattice Constants
389.07, 389.07, 389.07 pm
Space Group NameFm_ 3m
Space Group Number225

Nuclear Properties
Half-LifeStable
LifetimeStable
Stable Isotopes
102Pd, 104Pd, 105Pd, 106Pd, 108Pd, 110Pd
Isotopic Abundances
102Pd1.02%
104Pd11.14%
105Pd22.33%
106Pd27.33%
108Pd26.46%
110Pd11.72%

Notes on the properties of Palladium:
Specific Heat: Value given for solid phase.