Meitnerium vs Oganesson

PropertyMt MeitneriumOg Oganesson
Atomic number109118
SymbolMtOg
NameMeitneriumOganesson
Categorytransition-metalnoble-gas
Standard Atomic Weight278 u294 u
Period77
Group918
Blocksp
Phase at STPN/Agas
Electron configuration[Rn]7s25f146d7(calculated)[Rn] 7s2 7p6 5f14 6d10(predicted)
Oxidation states[1, 3, 4, 6, 8, 9][-1, 0, 1, 2, 4, 6]
Electronegativity (Pauling)N/AN/A
Electron affinity1.7 eV0.056 eV
Density3.740000e+4 kg/m³7000 kg/m³
Melting point-273.15 °C-273.15 °C
Boiling point-273.15 °C-243.15 °C
Discovery year19822006