Seaborgium is a synthetic element with the symbol Sg and atomic number 106, whose most stable isotope 271Sg has a half-life of 1.9 minutes. A more recently discovered isotope 269Sg has a potentially slightly longer half-life (ca. 2.1 min) based on the observation of a single decay. Chemistry experiments with seaborgium have firmly placed it in group 6 as a heavier homologue to tungsten.

Discovery Scientists working at the Joint Institute for Nuclear Research in Dubna, USSR reported their discovery of…