Carbon vs Radon

PropertyC CarbonRn Radon
Atomic number686
SymbolCRn
NameCarbonRadon
Categorynonmetalnoble-gas
Standard Atomic Weight12.0106 u222 u
Period26
Group1418
Blockpp
Phase at STPsolidgas
Electron configuration[He]2s22p2[Xe]6s24f145d106p6
Oxidation states[-4, -3, -2, -1, 0, 1, 2, 3, 4][0, 2, 6]
Electronegativity (Pauling)2.55N/A
Electron affinity1.2621 eV-0.7 eV
Density2267 kg/m³9.73 kg/m³
Melting point3549.85 °C-71.15 °C
Boiling point3824.85 °C-61.7 °C
Discovery year17971900