The Element Nihonium
Atomic Number: 113
Atomic Weight: 286
Melting Point: Unknown
Boiling Point: Unknown
Phase at Room Temperature: Expected to be a Solid
Element Classification: Metal
Period Number: 7
Group Number: 13
Group Name: none
Special Notes: Radioactive and Artificially Produced
What's in a name? Named for the country of Japan.
Say what? Nihonium is pronounced as nee-hone-ee-em.
History and Uses:
On July 23, 2004, scientists working at the RIKEN Nishina Center for Accelerator-based Science in Wako, Japan, created the first two atoms of the element nihonium by accelerating zinc ions to 10 percent the speed of light and then impacting them onto a thin bismuth target. Both atoms quickly underwent a series of four alpha decays, forming dubnium-262, which then decayed by spontaneous fission.
Nihonium's most stable isotope, nihonium-286, has a half-life of about 20 seconds. It decays into roentgenium-282 through alpha decay.
Since only a few atoms of nihonium have ever been produced, it currently has no uses outside of basic scientific research.
Estimated Crustal Abundance: Not Applicable
Estimated Oceanic Abundance: Not Applicable
Number of Stable Isotopes: 0 (View all isotope data)
Ionization Energy: Unknown
Oxidation States: Unknown
3s2 3p6 3d10
4s2 4p6 4d10 4f14
5s2 5p6 5d10 5f14
6s2 6p6 6d10
Citation and linking information
For questions about this page, please contact Steve Gagnon.