Seaborg is a chemical element with the symbol Sg and atomic number 106. It is a synthetic element, meaning it is not found naturally and must be created in a laboratory. Seaborg is part of the actinide series and is classified as a transuranium element, which are elements with atomic numbers greater than that of uranium. Named after the American chemist Glenn T. Seaborg, who contributed significantly to the discovery of several heavy elements, Seaborg is highly radioactive and has no stable isotopes. Its most stable isotope, Sg-271, has a half-life of about 2.5 minutes, making it challenging to study and understand its properties.