Isotopes of seaborgium

Isotopes of seaborgium (₁₀₆Sg)
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Seaborgium (₁₀₆Sg) is a synthetic element and so has no stable isotopes. A standard atomic weight cannot be given. The first isotope to be synthesized was ²⁶³Sg in 1974. There are 13 known radioisotopes from ²⁵⁸Sg to ²⁷¹Sg and 5 known isomers (^259mSg, ^261mSg, ^263mSg, ^265mSg, and ^267mSg). The longest-lived isotope is ²⁶⁹Sg with a half-life of 14 minutes.

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