Cerium vs Plutonium

PropertyCe CeriumPu Plutonium
Atomic number5894
SymbolCePu
NameCeriumPlutonium
Categorylanthanideactinide
Standard Atomic Weight140.116 u244 u
Period67
GroupN/AN/A
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f15d1[Rn]7s25f6
Oxidation states[1, 2, 3, 4][2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)1.121.28
Electron affinity0.955 eV-0.5 eV
Density6770 kg/m³1.984000e+4 kg/m³
Melting point797.85 °C639.85 °C
Boiling point3423.85 °C3227.85 °C
Discovery year18011941