Curium vs Seaborgium

PropertyCm CuriumSg Seaborgium
Atomic number96106
SymbolCmSg
NameCuriumSeaborgium
Categoryactinidetransition-metal
Standard Atomic Weight247 u271 u
Period77
GroupN/A6
Blockss
Phase at STPsolidN/A
Electron configuration[Rn]7s25f76d1[Rn]7s25f146d4
Oxidation states[3, 4, 5, 6][3, 4, 5, 6]
Electronegativity (Pauling)1.3N/A
Electron affinity0.277 eV0.85 eV
Density1.351000e+4 kg/m³3.500000e+4 kg/m³
Melting point1344.85 °C-273.15 °C
Boiling point3126.85 °C-273.15 °C
Discovery year19441974