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Technical data for Palladium

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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
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion16.7 kJ/mol
Heat of Vaporization380 kJ/mol
Heat of CombustionN/A
Specific Heat240 J/(kg K)[note]
Adiabatic IndexN/A
Neel PointN/A
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
Refractive IndexN/A
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
Heat of CombustionN/A
DOT Hazard Class4.2
DOT Numbers3200
EU NumberN/A
NFPA Fire Rating0
NFPA HazardsN/A
NFPA Health Rating1
NFPA Reactivity Rating0
RTECS NumberRTECSRT3480500
NFPA LabelNFPA Label

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockd
Group10
Period5
Electron Configuration[Kr]4d10
ColorSilver
Discovery
1803 in United Kingdom
Gas phaseN/A
CAS NumberCAS7440-05-3
CID NumberCID23938
Gmelin NumberN/A
NSC NumberN/A
RTECS NumberRTECSRT3480500

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
Decay ModeN/A
Quantum Numbers1S0
Neutron Cross Section6.9
Neutron Mass Absorption0.0023
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
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.

Up to date, curated data provided by
Mathematica's ElementData function from Wolfram Research, Inc.

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