Ts
Tennessine
Element 117 · Halogen
Tennessine (Ts)
Tennessine is a synthetic superheavy element in the halogen group. It was the most recently discovered element.
- Halogen
- Period 7
- Group 17
- p-block
- solid at room temperature
- ☢ Radioactive
Key properties
- Atomic mass
- [294]
- u
- Electron configuration
- [Rn] 5f14 6d10 7s2 7p5
- Melting point
- 449.9 °C
- 723 K
- Boiling point
- 609.9 °C
- 883 K
- Density
- 7.17 g/cm³
- Electronegativity
- —
- Atomic radius
- —
- 1st ionisation energy
- —
Superheavy elements have only been made a few atoms at a time. Most properties shown are theoretical predictions.
Compare with every element:Electronegativity chartAtomic radius chartIonisation energy chartDensity chart of the elementsMelting point chartElectron configuration chart
Did you know?
Notable facts about tennessine
- 01
Oak Ridge spent 250 days making the 22 milligrams of berkelium needed as its target.
- 02
It is the second-heaviest known element.
- 03
Despite sitting in the halogen group, it is expected to behave more like a metalloid.
Applications
What is tennessine used for?
- Research
History
Discovery & name origin
Discovered by
Year
Where
Russia and United States
Name origin
From Tennessee, home of Oak Ridge National Laboratory and Vanderbilt University.
Atomic structure
Atomic properties
Atomic structure
Atomic properties
- Atomic number
- 117
- Atomic mass
- [294] u
- Group
- 17
- Period
- 7
- Block
- p-block
- Electron configuration
- [Rn] 5f14 6d10 7s2 7p5
- Full configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p5
- Electrons per shell
- 2, 8, 18, 32, 32, 18, 7
- Electronegativity (Pauling)
- —
- Electron affinity
- —
- Atomic radius (van der Waals)
- —
- Stable isotopes
- None — all isotopes are radioactive
Oxidation states
Highlighted: common oxidation states (+5, +3, +1, -1).
Physical
Physical properties & colour
Physical
Physical properties & colour
- State at 20 °C
- Solid (predicted)
- Melting point
- 723 K · 449.9 °C · 841.7 °F
- Boiling point
- 883 K · 609.9 °C · 1,129.7 °F
- Density
- 7.17 g/cm³
- Molar heat capacity
- —
- Appearance
- —
- CPK model colour
- —
The CPK colour is the convention used for this element’s atoms in molecular models.
FAQ
Tennessine questions
What is Ts on the periodic table?
Ts is the symbol for tennessine, element 117 on the periodic table. It sits in group 17, period 7, in the halogen category, and has an atomic mass of [294].
What is the atomic number of tennessine?
Tennessine has atomic number 117, so every tennessine atom has 117 protons in its nucleus. Its symbol is Ts and its atomic mass is [294].
Who discovered tennessine?
Tennessine was discovered by Yuri Oganessian in 2010 (Russia and United States). The name comes from from Tennessee, home of Oak Ridge National Laboratory and Vanderbilt University.
What is tennessine used for?
Tennessine is used for: research.
Is tennessine a metal?
No. Tennessine is classed as a halogen.
What is the electron configuration of tennessine?
The electron configuration of tennessine is [Rn] 5f14 6d10 7s2 7p5 (predicted). Its 117 electrons are arranged in shells as 2, 8, 18, 32, 32, 18, 7.