Radium vs Nihonium

← Back to Periodic Table
PropertyRa RadiumNh Nihonium
Atomic number88113
SymbolRaNh
NameRadiumNihonium
Categoryalkaline-earth-metalpost-transition-metal
Standard Atomic Weight226 u286 u
Period77
Group213
Blocksp
Phase at STPsolidsolid
Electron configuration[Rn]7s2[Rn] 5f14 6d10 7s2 7p1(predicted)
Oxidation states[2]N/A
Electronegativity (Pauling)0.9N/A
Electron affinity0.096 eV0.6 eV
Density5000 kg/m³1.600000e+4 kg/m³
Melting point699.85 °C426.85 °C
Boiling point1139.85 °C1156.85 °C
Discovery year18982004