Iridium vs Seaborgium

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PropertyIr IridiumSg Seaborgium
Atomic number77106
SymbolIrSg
NameIridiumSeaborgium
Categorytransition-metaltransition-metal
Standard Atomic Weight192.217 u271 u
Period67
Group96
Blockss
Phase at STPsolidN/A
Electron configuration[Xe]6s24f145d7[Rn]7s25f146d4
Oxidation states[-3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9][3, 4, 5, 6]
Electronegativity (Pauling)2.2N/A
Electron affinity1.565 eV0.85 eV
Density2.256220e+4 kg/m³3.500000e+4 kg/m³
Melting point2445.85 °C-273.15 °C
Boiling point4427.85 °C-273.15 °C
Discovery year18031974