Protactinium vs Livermorium

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PropertyPa ProtactiniumLv Livermorium
Atomic number91116
SymbolPaLv
NameProtactiniumLivermorium
Categoryactinidepost-transition-metal
Standard Atomic Weight231.03588 u293 u
Period77
GroupN/A16
Blocksp
Phase at STPsolidsolid
Electron configuration[Rn]7s25f26d1[Rn] 7s2 7p4 5f14 6d10(predicted)
Oxidation states[2, 3, 4, 5][-2, 2, 4]
Electronegativity (Pauling)1.5N/A
Electron affinity0.123 eV0.7 eV
Density1.537000e+4 kg/m³1.290000e+4 kg/m³
Melting point1571.85 °C506.85 °C
Boiling point-273.15 °C861.85 °C
Discovery year19132000