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palladium
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palladium

Chemical element with symbol Pd and atomic number 46

Chemical elementchemical elementQ1089

Also known as 46Pd · element 46 · Pd

Symbol
Atomic number
Mass
Melting point
  • 1,828.05 K
Boiling point
  • 3,233 K
Density
  • 11,759 kg/m³
Discovered by
Discovered
  • 1803

Overview

All data

176 statements · 23% with external sources · numbers in brackets are citations

Named after
Subclass of
Canonical SMILES
Formula
Unicode character
Part of
Different from
Ionic radius
  • 0.64 ångström charge number: 2 · coordination number: 4
  • 0.86 ångström charge number: 2 · coordination number: 6
  • 0.76 ångström charge number: 3 · coordination number: 6
  • 0.62 ångström charge number: 4 · coordination number: 6
Electronegativity
  • 2.2
Electron configuration
  • 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 4d¹⁰
  • [Kr] 4d¹⁰
Space group
Crystal system
Bulk modulus
  • 167B Pa
Shear modulus
  • 48.5B Pa
Poisson's ratio
  • 0.368
Thermal conductivity
  • 72 watt per metre kelvin
Electrical conductivity
  • 9,260,000 siemens per metre
Speed of sound
  • 3,070 m/s
Electrical resistivity
  • 1.054e-7 ohm metre
Point group
Mohs' hardness
  • 4.75
Has characteristic
Linear thermal expansion coefficient
  • 11.77 micrometre per metre kelvin temperature: 20°C
Ionization energy
IPA transcription
Oxidation state
  • 0
  • 2
  • 4
  • 1
  • 3
  • 5
Atomic radius
  • 140 picometre
Covalent radius
  • 139 picometre

On other databases

77 identifiers linking palladium across the web's reference databases