Hassium

Symbol: Hs

Category(transition metal)

Density at 25°C: solid:  n/a

This unstable radioactive element, named after the German state of Hesse, with a half-life of possibly 9.7 seconds with the possibility of another metastable isotope lasting 11 minutes. Brief experiments have shown it behaves as the heavier homologue to osmium in group 8.