Nihonium

Atomic number

113

Atomic mass (u)

286.182

Category

Post-transition metal

Standard state

Expected to be a Solid

Melting point

Not reported

Boiling point

Not reported

Density (g/cm³)

Not reported in this source

Electronegativity (Pauling)

Not reported in this source

Electron configuration

[Rn]5f14 6d10 7s2 7p1 (predicted)

Oxidation states

Not reported in this source

Atomic radius (pm)

Not reported in this source

First ionization energy (eV)

Not reported in this source

Discovery & recognition

Discovery year / period (PubChem)

2004

Discovery credited to (RSC)

Scientists from RIKEN (The Institute of Physical and Chemical Research) in Japan

Date or period recorded by RSC

2004

Discovery place

RIKEN, Japan

An ancient date does not identify a first human discovery. Different references may date observation, isolation and formal recognition differently.

Natural occurrence & production

This transuranium element is primarily produced through nuclear reactions in reactors or particle accelerators. Some transuranium elements also occur naturally in extremely small traces; that is different from a mineable deposit.

“Unknown”

Royal Society of Chemistry · occurrence excerpt ↗

Continue the research

Reference values are not product specifications. Blank values have not been estimated. For superheavy elements, some properties and family assignments are theoretical or incompletely measured.