Tennessine (Ts)
Unknown / predicted · p-block · period 7 · group 17
Never seen.
Tennessine (symbol Ts) is chemical element number 117, a unknown / predicted in group 17, period 7 of the periodic table. Its standard atomic weight is (294) and its electron configuration is [Rn] 5f14 6d10 7s2 7p5. Its state at room temperature is unknown, and it is radioactive. Named after the state of Tennessee, home of Oak Ridge National Laboratory.
Properties
| Atomic number | 117 |
|---|---|
| Atomic mass | (294) |
| Category | Unknown / predicted |
| Block | p-block |
| Group · Period | 17 · 7 |
| Electron configuration | [Rn] 5f14 6d10 7s2 7p5 |
| Electrons per shell | 2, 8, 18, 32, 32, 18, 7 |
| State at 25 °C | unknown |
| Melting point | — |
| Boiling point | — |
| Density | — |
| Electronegativity (Pauling) | — |
| Radioactive | Yes — no stable isotope |
| Origin | synthetic |
| Discovered | 2010 · Dubna / Oak Ridge / Livermore |
Key facts about Tennessine
- Named after the state of Tennessee, home of Oak Ridge National Laboratory.
- The second-most-recently discovered element.
- Formally a halogen, but predicted to behave more like a metalloid.
- The berkelium target needed to make it could only be produced at one reactor in the world.
What Tennessine is used for
None — research only.
Where it sits in the periodic table
Tennessine is in group 17, period 7, of the p-block. Its electron configuration [Rn] 5f14 6d10 7s2 7p5 means its outermost shell holds 7 electrons, which is what places it here and explains much of its chemistry. See Tennessine on the interactive table →
Tennessine — frequently asked questions
What is Tennessine used for?
None — research only.
Is Tennessine radioactive?
Yes. Tennessine has no stable isotope, so every form of it is radioactive.
What is the electron configuration of Tennessine?
Tennessine has the electron configuration [Rn] 5f14 6d10 7s2 7p5, which is 2, 8, 18, 32, 32, 18, 7 electrons per shell.
What group and period is Tennessine in?
Tennessine is in group 17, period 7, in the p-block. Its outer shell holds 7 electrons.
Who discovered Tennessine?
Tennessine was discovered in 2010 by Dubna / Oak Ridge / Livermore.