What is "seaborgium"

n. A transuranic chemical element (''symbol'' Sg) with atomic number 106

Seaborgium is a chemical element with symbol Sg and atomic number 106. It is named after the American nuclear chemist Glenn T. Seaborg, and is the first and so far only element to be named after a person who was alive when the name was announced. 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, Sg, has a half-life of approximately 3.1 minutes.

In the periodic table of the elements, it is a d-block transactinide element. It is a member of the 7th period and belongs to the group 6 elements. Chemistry experiments have confirmed that seaborgium behaves as the heavier homologue to tungsten in group 6. The chemical properties of seaborgium are characterized only partly, but they compare well with the chemistry of the other group 6 elements.

In 1974, a few atoms of seaborgium were produced in laboratories in the former Soviet Union and in the United States. The priority of the discovery and therefore the naming of the element was disputed between Soviet and American scientists, and it was not until 1997 that International Union of Pure and Applied Chemistry (IUPAC) established seaborgium as the official name for the element.