Nihonium - Nh

Chemical properties of nihonium

Nihonium (Nh) is a synthetic, radioactive element with atomic number 113. 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

Nihonium is a synthetic, highly radioactive element. Only a small number of atoms have been produced, so its bulk physical and chemical properties are not directly established. It is made and studied in nuclear-reaction experiments and has no commercial or water-treatment application.

Health and environmental context

Nihonium 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.

Nihonium page last reviewed: 24 October 2026 by Lenntech.