Hassium: the essentials
Hassium, is a synthetic element that is not present in the environment at all.
The interested reader should consult the on-line version of The Wonderful World of Atoms and Nuclei for a fascinating insight into research on "super-heavy" atoms.
Hassium: historical information
Hassium: physical properties
Hassium: orbital properties
Isolation: only a few atoms of element 108, hassium, have ever been made. The first atoms were made through a nuclear reaction involving fusion of an isotope of lead, 208Pb, with one of iron, 58Fe.
208Bi + 58Fe → 265Hs + 1n
Isolation of an observable quantity of hassium has never been achieved, and may well never be. This is because hassium decays very rapidly through the emission of α-particles.
Press release: http://www.gsi.de/portrait/Pressemeldungen/17052001_e.html