Palladium

Palladium facts

Latin namePalladium
English namePalladium
chemical symbolPd
atomic number46
relative atomic mass106,42
period5
groupVIII.B
classificationtransition metals
discovery year1803
discovererW. H. Wollaston
melting point [°C]1552
boiling point [°C]2940
density [g cm-3]12,02
density at melting point [g cm-3]10,38
electronegativity [Pauling]2,2
oxidation statesII, III, IV
electron configuration[Kr]4d10
atomic radius [pm]169
covalent radius [pm]131
specific heat [J g-1K-1]0,24
heat of fusion [kJ mol-1]17,6
thermal conductivity [W m-1 K-1]71,8
el. conductivity [S m-1]107
1. ionizing potential [eV]8,3369
2. ionizing potential [eV]19,63
3. ionizing potential [eV]32,93
Mohse hardness4,8
Brinell hardness [MPa]37,3
Vickers hardness [MPa]461
shear modulus [GPa]44
Young's modulus [GPa]121
state at normal conditionssolid

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