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Isotopes of the Element Cobalt

[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
59100%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
47No Data AvailableNo Data AvailableNo Data Available
48No Data AvailableNo Data AvailableNo Data Available
49No Data AvailableNo Data AvailableNo Data Available
5038.8 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
70.50%
Electron Capture with
delayed Double Proton Emission
No Data Available
51> 200 nanosecondsElectron CaptureNo Data Available
52115 millisecondsElectron Capture100.00%
53240 millisecondsElectron Capture100.00%
53m247 millisecondsElectron Capture~ 98.50%
Proton Emission~ 1.50%
54193.28 millisecondsElectron Capture100.00%
54m1.48 minutesElectron Capture100.00%
5517.53 hoursElectron Capture100.00%
5677.236 daysElectron Capture100.00%
57271.74 daysElectron Capture100.00%
5870.86 daysElectron Capture100.00%
58m9.10 hoursIsomeric Transition100.00%
59STABLE--
601925.28 daysBeta-minus Decay100.00%
60m10.467 minutesIsomeric Transition99.76%
Beta-minus Decay0.24%
611.650 hoursBeta-minus Decay100.00%
621.50 minutesBeta-minus Decay100.00%
62m13.91 minutesBeta-minus Decay> 99.00%
Isomeric Transition< 1.00%
6327.4 secondsBeta-minus Decay100.00%
640.30 secondsBeta-minus Decay100.00%
651.16 secondsBeta-minus Decay100.00%
660.20 secondsBeta-minus Decay100.00%
670.425 secondsBeta-minus Decay100.00%
680.199 secondsBeta-minus Decay100.00%
68m1.6 secondsBeta-minus Decay100.00%
69229 millisecondsBeta-minus Decay100.00%
70108 millisecondsBeta-minus Decay100.00%
70m0.50 secondsBeta-minus Decay100.00%
7180 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
<= 6.00%
7259.9 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
>= 6.00%
7341 millisecondsBeta-minus DecayNo Data Available
7425 millisecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
~ 18.00%
75> 150 nanosecondsBeta-minus Decay100.00%
76> 634 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with delayed
Double Neutron Emission
No Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available