Seaborgium is a synthetic element with symbol Sg and atomic number 106. Its 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. Seaborgium is named after Glenn T. Seaborg who was alive at the time the naming was publicized.