page_title: Isotopes of seaborgium
section_title: 261Sg
hierarchical_section_title: Isotopes of seaborgium / Spectroscopic decay schemes / 261Sg
caption_attribution_description: English: decay scheme for 261Sg
context_page_description: Seaborgium is a synthetic element and so has no stable isotopes. A standard atomic weight cannot be given. The first isotope to be synthesized was ²⁶³ᵐSg in 1974. There are 12 known radioisotopes from ²⁵⁸Sg to ²⁷¹Sg and 2 known isomers. The longest-lived isotope is ²⁶⁹Sg with a half-life of 14 minutes.
caption: This is the currently accepted decay scheme for 261Sg from the study by Streicher et al. at GSI in 2003–2006
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