Hassium (Hs), element 108 – Learn Acer periodic table

Hassium

Transition metal, atomic number 108.

Hassium is a chemical element with symbol Hs and atomic number 108, named after the German state of Hesse. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 269Hs, has a half-life of approximately 9.7 seconds, although an unconfirmed metastable state, 277mHs, may have a longer half-life of about 130 seconds. More than 100 atoms of hassium have been synthesized to date.

Facts

Symbol Hs. Atomic mass 269.0 u. Group 8, period 7. Electron configuration [Rn] 5f14 6d6 7s2. Electrons per shell 2, 8, 18, 32, 32, 14, 2. State at room temperature: Solid. Melting point unknown, boiling point unknown. Discovered by Gesellschaft für Schwerionenforschung.

Element data from Wikipedia, CC BY-SA 3.0.