Periodic Table of Elements

46

Palladium

106.42

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 kJmol-1
Covalent radius: 1396 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.