Thallium vs Radon

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PropertyTl ThalliumRn Radon
Atomic number8186
SymbolTlRn
NameThalliumRadon
Categorypost-transition-metalnoble-gas
Standard Atomic Weight204.3835 u222 u
Period66
Group1318
Blockpp
Phase at STPsolidgas
Electron configuration[Xe]6s24f145d106p1[Xe]6s24f145d106p6
Oxidation states[-5, -2, -1, 1, 2, 3][0, 2, 6]
Electronegativity (Pauling)1.62N/A
Electron affinity0.377 eV-0.7 eV
Density1.180000e+4 kg/m³9.73 kg/m³
Melting point303.85 °C-71.15 °C
Boiling point1472.85 °C-61.7 °C
Discovery year18611900