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113Nh286

Nihonium

Post-transition metalsBlock pPeriod 7Group 13solid at 20 °C
Configuration :
[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p¹
Atomic mass :
286 u
Predicted propertiesMany physical properties of this element are theoretical calculated values, not experimental measurements. Transactinides (Z ≥ 104) are only synthesized as a few atoms with very short half-lives. Source: IUPAC 2021.
3D Bohr-model representation of the Nihonium atom (symbol Nh, atomic number Z=113). Electron shell configuration: 2, 8, 18, 32, 32, 18, 3 electrons.
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Bohr model · educational

Electron configuration

Full1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p⁶ 5f¹⁴ 6d¹⁰ 7s² 7p¹
Short[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p¹
Valence electrons3
KLMNOPQ shells
K2
L8
M18
N32
O32
P18
Q3

Electronegativity

Pauling
Allen
Mulliken (eV)

Atomic radii

Empirical
Calculated
Covalent
Van der Waals

Successive ionisation energies

I₁704.9 kJ/mol
Electron affinity

Oxidation states

-1+1+3+5
Bold states = most common.
Period 7Block pIUPAC Group 13Family Post-transition metals
Sources : NIST Atomic Weights & Isotopic Compositions, IUPAC Recommendations, CODATA. Methodology