117Ts[294]
Tennessine (Ts)
Element 117 · Halogen
Tennessine (Ts) is a chemical element with atomic number 117. It is classified as a halogen in period 7, group 17 of the periodic table (the p-block). Its most stable known isotope has mass number 294 and its ground-state electron configuration is [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁵. Its properties are largely predicted, as only a few atoms have ever been produced.
Tennessine facts
| Atomic number (Z) | 117 |
|---|---|
| Symbol | Ts |
| Mass number of most stable isotope | [294] |
| Category | Halogen |
| Group | 17 |
| Period | 7 |
| Block | p-block |
| Electron configuration | [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁵ |
| Electronegativity (Pauling) | — |
| State at 20 °C | Unknown (synthetic) |
| Protons / electrons | 117 / 117 |
| Neutrons (most common isotope, approx.) | 177 |
| Molar mass | 294 g/mol |