Polonium vs Nihonium

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PropertyPo PoloniumNh Nihonium
Atomic number84113
SymbolPoNh
NamePoloniumNihonium
Categorymetalloidpost-transition-metal
Standard Atomic Weight209 u286 u
Period67
Group1613
Blockpp
Phase at STPsolidsolid
Electron configuration[Xe]6s24f145d106p4[Rn] 5f14 6d10 7s2 7p1(predicted)
Oxidation states[-2, 2, 4, 5, 6]N/A
Electronegativity (Pauling)2N/A
Electron affinity1.9 eV0.6 eV
Density9320 kg/m³1.600000e+4 kg/m³
Melting point253.85 °C426.85 °C
Boiling point961.85 °C1156.85 °C
Discovery year18982004