Ts
Tennessine
Tennessine is a chemical element with the symbol Ts and atomic number 117. It has a mass number of 294, sits in period 7 and group 17, and is classified as a halogen.
Properties
| Symbol | Ts |
|---|---|
| Atomic number | 117 |
| Mass number | 294 |
| Category | Halogen |
| Group | 17 |
| Period | 7 |
| Electron configuration | [Rn] 5f14 6d10 7s2 7p5 |
| Outer-shell electrons | 7 |
The figure of 294 is a mass number rather than a measured atomic weight, because this element has no stable isotope.
Calculate with tennessine
- Molar mass of any formula containing it
- Electron configuration, including ions
- Effective nuclear charge by Slater's rules
- Average atomic mass from isotope abundances
Group 17
Atomic weights are the IUPAC 2021 standard values, abridged to the conventional five significant figures. Group, period, category and electron configuration are derived from the atomic number rather than stored, so they cannot drift out of step with it.