Palladium was discovered in 1803 by W. H. Wollaston in England. It is named after the asteroid Pallas.
Name: Palladium
Symbol: Pd
Atomic number: 46
Atomic weight: 106.42
State: solid
Group, period, block: 10, 5, d
Color: silvery white
Classification: transition metal
Electron configuration: 4d10
0,2,8,18,18
Physical properties
Density: 12.023 g/cm-3
Melting point: 1828.05 K,1554.9 °C,2830.82 °F
Boiling point: 3236 K,2963 °C,5365 °F
Atomic properties
Oxidation states: 0, +1, +2, +4, +6
Electronegativity: 2.20 (Pauling scale)
Ionization energies: 1st: 804.4 kJ·mol-1
Covalent radius: 139±6 pm
Van der Waals radius: 163 pm
- Pd
Electron Configuration
Isotopes
There are six naturally occurring isotopes of palladium exist, 102Pd, 105Pd, 106Pd, 108Pd, and 110Pd.