Polonium vs Seaborgium

PropertyPo PoloniumSg Seaborgium
Atomic number84106
SymbolPoSg
NamePoloniumSeaborgium
Categorymetalloidtransition-metal
Standard Atomic Weight209 u271 u
Period67
Group166
Blockps
Phase at STPsolidN/A
Electron configuration[Xe]6s24f145d106p4[Rn]7s25f146d4
Oxidation states[-2, 2, 4, 5, 6][3, 4, 5, 6]
Electronegativity (Pauling)2N/A
Electron affinity1.9 eV0.85 eV
Density9320 kg/m³3.500000e+4 kg/m³
Melting point253.85 °C-273.15 °C
Boiling point961.85 °C-273.15 °C
Discovery year18981974