Thallium vs Oganesson

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PropertyTl ThalliumOg Oganesson
Atomic number81118
SymbolTlOg
NameThalliumOganesson
Categorypost-transition-metalnoble-gas
Standard Atomic Weight204.3835 u294 u
Period67
Group1318
Blockpp
Phase at STPsolidgas
Electron configuration[Xe]6s24f145d106p1[Rn] 7s2 7p6 5f14 6d10(predicted)
Oxidation states[-5, -2, -1, 1, 2, 3][-1, 0, 1, 2, 4, 6]
Electronegativity (Pauling)1.62N/A
Electron affinity0.377 eV0.056 eV
Density1.180000e+4 kg/m³7000 kg/m³
Melting point303.85 °C-273.15 °C
Boiling point1472.85 °C-243.15 °C
Discovery year18612006