SymbolPd
Latin namePalladium
Atomic number46
Period5
Element categoryTransition elements
Relative atomic mass106.42
GroupVIII.B
Electronegativity
2.2
Oxidation numbers
2, 4
Electron configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s0
Density [g/cm3]
12.02
State
Solid
Melting point [°C]
1554
Boiling point [°C]
3980
Atomic radius [pm]
169
Covalent radius [pm]
131
Thermal conductivity [W m-1K-1]
71.8
Heat capacity [J K-1g-1]
0.244
Discovery
1803
Hardness [Mohs scale]
4.8
Vickers hardness [MPa]
461
Brinell hardness [MPa]
37.3
Young's modulus [GPa]
121
Electrical conductivity [S m-1]
107
Shear modulus [GPa]
44
1.st ionization energy [eV]
8.3369
2.nd ionization energy [eV]
19.63
3.rd ionization energy [eV]
32.93
Stable isotopes
6
Unstable isotopes
15