Niobium vs Nihonium

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PropertyNb NiobiumNh Nihonium
Atomic number41113
SymbolNbNh
NameNiobiumNihonium
Categorytransition-metalpost-transition-metal
Standard Atomic Weight92.90637 u286 u
Period57
Group513
Blocksp
Phase at STPsolidsolid
Electron configuration[Kr]5s14d4[Rn] 5f14 6d10 7s2 7p1(predicted)
Oxidation states[-3, -1, 0, 1, 2, 3, 4, 5]N/A
Electronegativity (Pauling)1.6N/A
Electron affinity0.893 eV0.6 eV
Density8570 kg/m³1.600000e+4 kg/m³
Melting point2476.85 °C426.85 °C
Boiling point4743.85 °C1156.85 °C
Discovery year18012004