Quick answerNihonium (Nh) is a post-transition metal with atomic number 113 and a mass number of 286 (the most stable isotope), in group 13, period 7. It was discovered by Kosuke Morita and colleagues in 2004. It is used for superheavy element research and testing the island of stability. Its electron configuration is [Rn] 5f14 6d10 7s2 7p1 (predicted).
Nihonium is the first element discovered in Asia, named for Japan, and the first found by the RIKEN laboratory.
Key facts
| Symbol | Nh |
|---|---|
| Atomic number | 113 |
| Atomic mass | [286] — mass number of the most stable isotope |
| Category | post-transition metal |
| Group | 13 |
| Period | 7 |
| Block | p-block |
| Electron configuration | [Rn] 5f14 6d10 7s2 7p1 predicted |
| Discovered | Kosuke Morita and colleagues, 2004 |
| Uses | superheavy element research, testing the island of stability |
Quick quiz
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Keep exploring
- Periodic table — all 118 elements
- Gallium (Ga) — another post-transition metal, atomic number 31
- Indium (In) — another post-transition metal, atomic number 49
- Tin (Sn) — another post-transition metal, atomic number 50
- Thallium (Tl) — another post-transition metal, atomic number 81
- Lead (Pb) — another post-transition metal, atomic number 82
- Bismuth (Bi) — another post-transition metal, atomic number 83
- Polonium (Po) — another post-transition metal, atomic number 84
- Flerovium (Fl) — another post-transition metal, atomic number 114
- Moscovium (Mc) — another post-transition metal, atomic number 115
- Livermorium (Lv) — another post-transition metal, atomic number 116
- All post-transition metal elements — on the periodic table
Sources & last updated
- CIAAW — Standard Atomic Weights
- PubChem Periodic Table
- Wikipedia — Timeline of chemical element discoveries
- Wikipedia — Nihonium
Last updated: . Figures are shown with their year; where sources disagree, the value is left out rather than estimated.