Tennessine (Ts): Electron Configuration and Properties
Tennessine (Ts): Electron Configuration and Properties
Electron configuration [Rn] 7s2 5f14 6d10 7p5 · group 17 · period 7 · Ar [294]
Tennessine data
- Atomic number
- 117
- Relative atomic mass
- [294]
- Group
- 17
- Period
- 7
- Block
- p
- Category
- Halogen
- Electron configuration
- [Rn] 7s2 5f14 6d10 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 (K L M N O P Q)
- Valence electrons
- 7
- Electronegativity (Pauling)
- no data
- First ionisation energy
- no data
- Atomic radius (van der Waals)
- no data
- State at room temperature
- Solid (predicted)
- Melting point
- no data
- Boiling point
- no data
- Density
- no data
- Common oxidation states
- +5, +3, +1, −1
- Discovered
- 2010
Source: PubChem (NIH, accessed 13 Nov 2026); atomic mass: IUPAC standard atomic weight.
Electron shell diagram
K 2 · L 8 · M 18 · N 32 · O 32 · P 18 · Q 7
Orbital diagram (outer electrons)
About tennessine
Tennessine is a chemical element with the symbol Ts and atomic number 117. It is a halogen in group 17, period 7, p-block. The element was discovered in 2010. It is named after the state of Tennessee. Its bulk properties have never been measured because only a few atoms have been made; it is expected to be a solid at room temperature.
Tennessine electron configuration
The electron configuration of tennessine is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p5, or in short [Rn] 7s2 5f14 6d10 7p5. Its electrons occupy 7 shells: K = 2, L = 8, M = 18, N = 32, O = 32, P = 18, Q = 7. Tennessine has 7 valence electrons in the Q shell (7s2 7p5), which is why it sits in group 17. For this superheavy element the configuration is a theoretical prediction.
Filling order: 1s2(2) → 2s2(4) → 2p6(10) → 3s2(12) → 3p6(18) → 4s2(20) → 3d10(30) → 4p6(36) → 5s2(38) → 4d10(48) → 5p6(54) → 6s2(56) → 4f14(70) → 5d10(80) → 6p6(86) → 7s2(88) → 5f14(102) → 6d10(112) → 7p5(117)
Uses of tennessine
Tennessine has no practical use outside research, because it can only be made a few atoms at a time in particle accelerators.
Safety
Only a handful of tennessine atoms have ever been made and they decay very quickly, so it is never handled in an ordinary laboratory.
Other elements in group 17
Frequently asked questions
What is the electron configuration of tennessine?
The electron configuration of tennessine (Ts, atomic number 117) is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p5, or [Rn] 7s2 5f14 6d10 7p5 in short. By shell: 2, 8, 18, 32, 32, 18, 7.
How many valence electrons does tennessine have?
Tennessine has 7 valence electrons.
Which group and period is tennessine in?
Tennessine is in group 17, period 7, p-block.
What is the atomic mass of tennessine?
Tennessine has no stable isotope, so the mass number of its longest-lived isotope, [294], is given.
Prepare solutions with analytical-grade reagents
AMI Scientific is one of the official TCI distributors in Indonesia. Reagents with lot CoA & SDS, formal quotations and tax invoices for universities and laboratories.
Other formulas & calculators: molarity, mole, molality, normality, dilution, titration, pH, buffer, molar mass, ppm, mole fraction, mass percent, periodic table, chemical MSDS.
