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Periodic table
Period 7Group 13
113Unknown
Nh 284 Atomic mass · u
Post-transition metals

Nihonium

Nihonium 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.

Discovery 2003 (RIKEN)
Nihonium electron shellsNh113 protons
K2L8M18N32O32P18Q3
A simplified shell model. Electron positions are illustrative.

Physical properties

Values for the element in its standard state.

Density
Not available
Melting point
Not available
Boiling point
Not available
Atomic radius
Not available
Bonding type
Not recorded
Molar heat
Not available

Inside the atom

Electron arrangement and the energy behind its behavior.

Full electron configuration

1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons; 4p, 6 electrons; 4d, 10 electrons; 5s, 2 electrons; 5p, 6 electrons; 4f, 14 electrons; 5d, 10 electrons; 6s, 2 electrons; 6p, 6 electrons; 5f, 14 electrons; 6d, 10 electrons; 7s, 2 electrons; 7p, 1 electrons;

[Rn] represents 86 core electrons. The full view shows them explicitly.

113 electrons Orbital order preserved from source

Electronegativity
Not availablePauling scale
First ionization energy
Not available
Electron affinity
Not available
Van der Waals radius
Not available

About nihonium

Appearance
Not recorded
Discovery
2003 (RIKEN)

A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.