Neodymium vs Plutonium

PropertyNd NeodymiumPu Plutonium
Atomic number6094
SymbolNdPu
NameNeodymiumPlutonium
Categorylanthanideactinide
Standard Atomic Weight144.242 u244 u
Period67
GroupN/AN/A
Blockss
Phase at STPsolidsolid
Electron configuration[Xe]6s24f4[Rn]7s25f6
Oxidation states[0, 2, 3, 4][2, 3, 4, 5, 6, 7, 8]
Electronegativity (Pauling)1.141.28
Electron affinity1.913 eV-0.5 eV
Density7010 kg/m³1.984000e+4 kg/m³
Melting point1020.85 °C639.85 °C
Boiling point3073.85 °C3227.85 °C
Discovery year18411941