Seaborgium
. Seaborgium, symbol Sg, chemical element with the atomic number 106. Seaborgium is produced artificially by nuclear fusion (in which an element with larger atoms is produced by fusing two smaller atoms from other elements). Each seaborgium atom contains a large nucleus, or central mass, containing positively charged particles called protons and neutral particles called neutrons . The large number of particles in the nucleus makes the atom unstable and causes the atom to split apart into smaller components soon after it is created. The International Union of Pure and Applied Chemistry named element 106 seaborgium (Sg) to honor Nobel Laureate Glenn T. Seaborg , who codiscovered plutonium and nine other transuranium elements. Seaborgium, which was previously called unnilhexium, is the first element that was named for a living person. Seaborgium has the atomic number 106, which means that each Sg atom contains 106 protons in the nucleus. Scientists have created several isotopes of seab...