Palladium vs Hafnium

PropertyPd PalladiumHf Hafnium
Atomic number4672
SymbolPdHf
NamePalladiumHafnium
Categorytransition-metaltransition-metal
Standard Atomic Weight106.42 u178.49 u
Period56
Group104
Blockds
Phase at STPsolidsolid
Electron configuration[Kr]4d10[Xe]6s24f145d2
Oxidation states[1, 2, 3, 4, 5][-2, 0, 1, 2, 3, 4]
Electronegativity (Pauling)2.21.3
Electron affinity0.557 eV0.178 eV
Density1.200000e+4 kg/m³1.330000e+4 kg/m³
Melting point1554.9 °C2232.85 °C
Boiling point2962.85 °C4602.85 °C
Discovery year18031911