46Solid
Pd 106.42 Atomic mass · uTransition metals
Palladium
Palladium is a chemical element with symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas.
Discovery 1803 (William Hyde Wollaston)
K2L8M18N18
Physical properties
Values for the element in its standard state.
- Density
- 12.023g/cm³
- Melting point
- 1,828K
- Boiling point
- 3,236K
- Atomic radius
- 131pm
- Bonding type
- Metallic
- Molar heat
- 25.98J/(mol·K)
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons; 4p, 6 electrons; 4d, 10 electrons;
[Kr] represents 36 core electrons. The full view shows them explicitly.
46 electrons Orbital order preserved from source
- Electronegativity
- 2.2Pauling scale
- First ionization energy
- 804kJ/mol
- Electron affinity
- 54kJ/mol
- Van der Waals radius
- 163pm
Pd PalladiumAtomic number 46
804kJ/mol
Atomic numberGaps indicate unavailable data
About palladium
- Appearance
- Silvery white
- Discovery
- 1803 (William Hyde Wollaston)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.