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Seaborgium, atomic structure
Seaborgium (Sg). Diagram of the nuclear composition, electron configuration, chemical data, and valence (outer electron) orbitals of an atom of seaborgium-271 (atomic number: 106), an isotope of this radioactive element. The nucleus consists of 106 protons (red) and 165 neutrons (orange). 106 electrons (white) successively occupy available electron shells (rings). Seaborgium, named after Glenn Seaborg and first synthesised in 1974, is a transactinide and transition metal in group 6, period 7, and the d-block of the periodic table. Seaborgium-271, the longest-lived isotope of seaborgium, has a half-life of around 2.4 minutes.
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