Ts
Tennessine
Element 117 · 294.211 u
Unknown Properties
p-block
Periode 7
Group 17
Onbekend by RT
Radioaktief
t½ 51 milliseconds
SintetikName
Dag lengte: →
Tennessine is the second-heaviest known halogen and one of the most recently confirmed elements.
Fisiese eienskappe
| Atomic Mass | 294.211 u |
| Density | 7.2 g/cm³ |
| Smelt punt: | 723.0 K |
| Boiling Point | 883.0 K |
| Appearance | Metallic (predicted) |
| Toestand by kamerkomp | Onbekend |
Chemical Properties
| Oxidation States | +1, +3, +5 |
Atomic Properties
| Electron Configuration | [Rn] 5f14 6d10 7s2 7p5 |
Discovery
| Discovered By | Joint Institute for Nuclear Research / Oak Ridge National Laboratory |
| Discovery Year | 2010 |
| Location | Dubna, Russia |
| Genoemde Na | Named after Tennessee, USA |
About Tennessine
Tennessine was produced by bombarding berkelium-249 with calcium-48 ions. The berkelium target took 250 days to produce at Oak Ridge. Only about 15 atoms have been detected.
Gebruiks & Programme
No practical applications. Scientific research only.
Fun Fact
Creating tennessine required producing berkelium over 250 days at Oak Ridge, then shipping it to Russia -- a remarkable collaboration.
Isotopes
| Definieer Molekulêr Gewigte | Abundance | Half-Life | Stabiel |
| 293 | - | 22 milliseconds | Nee |
| 294 | - | 51 milliseconds | Nee |
Electron Configuration
[Rn] 5f14 6d10 7s2 7p5