Ruthenium vs Oganesson

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PropertyRu RutheniumOg Oganesson
Atomic number44118
SymbolRuOg
NameRutheniumOganesson
Categorytransition-metalnoble-gas
Standard Atomic Weight101.07 u294 u
Period57
Group818
Blocksp
Phase at STPsolidgas
Electron configuration[Kr]5s14d7[Rn] 7s2 7p6 5f14 6d10(predicted)
Oxidation states[-4, -2, 1, 2, 3, 4, 5, 6, 7, 8][-1, 0, 1, 2, 4, 6]
Electronegativity (Pauling)2.2N/A
Electron affinity1.05 eV0.056 eV
Density1.210000e+4 kg/m³7000 kg/m³
Melting point2333.85 °C-273.15 °C
Boiling point4149.85 °C-243.15 °C
Discovery year18282006