Plutonium vs Seaborgium

PropertyPu PlutoniumSg Seaborgium
Atomic number94106
SymbolPuSg
NamePlutoniumSeaborgium
Categoryactinidetransition-metal
Standard Atomic Weight244 u271 u
Period77
GroupN/A6
Blockss
Phase at STPsolidN/A
Electron configuration[Rn]7s25f6[Rn]7s25f146d4
Oxidation states[2, 3, 4, 5, 6, 7, 8][3, 4, 5, 6]
Electronegativity (Pauling)1.28N/A
Electron affinity-0.5 eV0.85 eV
Density1.984000e+4 kg/m³3.500000e+4 kg/m³
Melting point639.85 °C-273.15 °C
Boiling point3227.85 °C-273.15 °C
Discovery year19411974