Oxygen-11
Properties and data of the isotope 11O.
See also: list of Oxygen isotopes.
General data
Name of the isotope:Oxygen-11; O-11Symbol:11O or 118OMass number A:11 (= number of nucleons)Atomic number Z:8 (= number of protons)Neutrons N:3Isotopic mass:11.05125(6) u (atomic weight of Oxygen-11)Nuclide mass:11.0468614 u (calculated nuclear mass without electrons)Mass excess:47.73907 MeVMass defect:0.037345004000001 u (per nucleus)Nuclear binding energy:34.78664716 MeV (per nucleus)
3.16242247 MeV (average binding energy per nucleon)Half-life:198(12) ysDecay constant λ:3.500743336161 × 10+21 s-1Specific activity α:1.916542680440 × 10+44 Bq g-1
5.179845082272 × 10+33 Ci g-1Spin and parity:
(nuclear angular momentum)(3/2-)Mirror nucleus:Lithium-11Year of discovery:2018
Radioactive Decay
Half-life T½ = 198(12) ys respectively 198 × 10-24 seconds s.
| Decay mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| 2p | 9C | 100 % | | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 3) and isobaric (same nucleon number A = 11) with Oxygen-11. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| OZ | Isotone N = 3 | Isobar A = 11 |
|---|
| 1 | 4H | |
| 2 | 5He | |
| 3 | 6Li | 11Li |
| 4 | 7Be | 11Be |
| 5 | 8B | 11B |
| 6 | 9C | 11C |
| 7 | 10N | 11N |
| 8 | 11O | 11O |
External data and identifiers
Literature and References
[1] - T. B. Webb et al.:
First Observation of Unbound 11O, the Mirror of the Halo Nucleus 11Li.
In: Physical Review Letters, (2019), DOI 10.1103/PhysRevLett.122.122501.
Last update: 2023-09-06
Perma link: https://www.chemlin.org/isotope/oxygen-11
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