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Isotopes of the Element Seaborgium

[Click for Main Data]

Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.

Naturally Occurring Isotopes

Seaborgium has no naturally occurring isotopes.

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
2582.9 millisecondsSpontaneous Fission<= 100.00%
Alpha Decay (suspected)No Data Available
2590.32 secondsAlpha Decay96.00%
Spontaneous Fission4.00%
259m0.28 secondsAlpha Decay< 100.00%
2603.6 millisecondsSpontaneous Fission50.00%
Alpha Decay50.00%
260m4.95 millisecondsSpontaneous Fission71.00%
Alpha Decay29.00%
2610.23 secondsAlpha Decay100.00%
Spontaneous Fission< 1.00%
2626.9 millisecondsSpontaneous Fission>= 78.00%
Alpha Decay<= 22.00%
2631.0 secondsAlpha Decay> 70.00%
Spontaneous Fission< 30.00%
263m0.12 secondsIsomeric TransitionNo Data Available
Alpha DecayNo Data Available
26437 millisecondsSpontaneous Fission100.00%
Alpha Decay< 36.00%
26516.2 secondsAlpha Decay>= 65.00%
Spontaneous Fission<= 35.00%
No Data AvailableNo Data Available
26621 secondsSpontaneous Fission> 50.00%
Alpha Decay> 18.00%
267No Data AvailableNo Data AvailableNo Data Available
268No Data AvailableSpontaneous Fission (suspected)No Data Available
Alpha Decay (suspected)No Data Available
269No Data AvailableNo Data AvailableNo Data Available
270No Data AvailableAlpha Decay (suspected)No Data Available
Spontaneous Fission (suspected)No Data Available
2712.4 minutesAlpha Decay~ 50.00%
Spontaneous Fission~ 50.00%
272No Data AvailableAlpha Decay (suspected)No Data Available
Spontaneous Fission (suspected)No Data Available
273No Data AvailableSpontaneous Fission (suspected)No Data Available