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113Nh286.000
Nihonium
unknown, probably transition metalNihonium is a chemical element with atomic number 113. It has a symbol Nh. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and is extremely radioactive; its most stable known isotope, nihonium-286, has a half-life of 20 seconds.
Phase: Solid
2, 8, 18, 32, 32, 18, 3
Physical Properties
Atomic Mass286 u
Density16 g/cm³
Melting Point700 K
Boiling Point1430 K
Period7
PhaseSolid
Chemical Properties
Electron Configuration1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p1
Semantic Config*[Rn] 5f14 6d10 7s2 7p1
Shells2, 8, 18, 32, 32, 18, 3
Electron Affinity66.6 kJ/mol
Discovery
Discovered byRIKEN