Molybdenum vs Roentgenium

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PropertyMo MolybdenumRg Roentgenium
Atomic number42111
SymbolMoRg
NameMolybdenumRoentgenium
Categorytransition-metaltransition-metal
Standard Atomic Weight95.95 u281 u
Period57
Group611
Blockss
Phase at STPsolidN/A
Electron configuration[Kr]5s14d5[Rn] 7s2 5f14 6d9(predicted)
Oxidation states[-4, -2, -1, 0, 1, 2, 3, 4, 5, 6][-1, 1, 3, 5]
Electronegativity (Pauling)2.16N/A
Electron affinity0.744 eV1.6 eV
Density1.020000e+4 kg/m³2.870000e+4 kg/m³
Melting point2622.85 °C-273.15 °C
Boiling point4638.85 °C-273.15 °C
Discovery year17781994