Tennessine - Ts

Chemical properties of tennessine

Tennessine (Ts) is a synthetic, radioactive element with atomic number 117. The representative mass number shown here identifies a radioactive isotope; it is not a standard atomic weight. Only a few atoms have been produced, so bulk properties such as density, melting point, and boiling point are unknown.

Research and occurrence

Tennessine is a synthetic, highly radioactive element in Group 17. Only a small number of atoms have been made, so its chemical behavior and physical properties are not known from bulk measurements. Its place in the halogen group helps guide research, but it has no commercial or water-treatment application.

Health and environmental context

Tennessine is produced only in specialised nuclear research and is not encountered as an environmental contaminant in ordinary water or process-water treatment. This page is an element overview, not guidance for handling radioactive materials.

Back to the periodic table of elements.

Tennessine page last reviewed: 24 October 2026 by Lenntech.