It's Elemental

Ununoctium

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(Ununoctium)

The Periodic Table of Elements

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Helium

Isotopes of the Element Hydrogen

[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

Mass NumberNatural AbundanceHalf-life
199.9885%STABLE
20.0115%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
1STABLE--
2STABLE--
312.32 yearsBeta-minus Decay100.00%
4No Data AvailableNeutron Emission100.00%
57.995×10-23 secondsDouble Neutron Emission100.00%
62.848×10-22 secondsNeutron Emission100.00%
79.152×10-15 secondsDouble Neutron Emission
(suspected)
No Data Available