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Isotopes of the Element Bromine

[Click for Main Data]         Proton Emission     Neutron Emission     Electron Emission     Positron Emission

Most of the isotope data on this site has been obtained from the National Nuclear Data Center.

Naturally Occurring Isotopes

Mass NumberNatural AbundanceHalf-life
7950.69%STABLE
8149.31%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
67No Data AvailableProton Emission (suspected)No Data Available
681.2 microsecondsProton Emission (suspected)No Data Available
6924 nanosecondsProton Emission (suspected)No Data Available
7079.1 millisecondsElectron Capture100.00%
70m2.2 secondsElectron Capture100.00%
7121.4 secondsElectron Capture100.00%
7278.6 secondsElectron Capture100.00%
72m10.6 secondsIsomeric Transition100.00%
Electron CaptureNo Data Available
733.4 minutesElectron Capture100.00%
7425.4 minutesElectron Capture100.00%
74m46 minutesElectron Capture100.00%
7596.7 minutesElectron Capture100.00%
7616.2 hoursElectron Capture100.00%
76m1.31 secondsIsomeric Transition> 99.40%
Electron Capture< 0.60%
7757.036 hoursElectron Capture100.00%
77m4.28 minutesIsomeric Transition100.00%
786.45 minutesElectron Capture>= 99.99%
Beta-minus Decay<= 0.01%
79STABLE--
79m5.1 secondsIsomeric Transition100.00%
8017.68 minutesBeta-minus Decay91.70%
Electron Capture8.30%
80m4.4205 hoursIsomeric Transition100.00%
81STABLE--
8235.282 hoursBeta-minus Decay100.00%
82m6.13 minutesIsomeric Transition97.60%
Beta-minus Decay2.40%
832.40 hoursBeta-minus Decay100.00%
8431.76 minutesBeta-minus Decay100.00%
84m6.0 minutesBeta-minus Decay100.00%
852.90 minutesBeta-minus Decay100.00%
8655.1 secondsBeta-minus Decay100.00%
8755.65 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
2.60%
8816.29 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
6.58%
894.40 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
13.80%
901.91 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
25.20%
910.541 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
20.00%
920.343 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
33.10%
93102 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
68.00%
9470 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
68.00%
95>= 150 nanoseconds   Beta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
34.00%
96>= 150 nanosecondsBeta-minus Decay with
delayed Neutron Emission
27.60%
Beta-minus Decay100.00%
97> 300 nanosecondsBeta-minus DecayNo Data Available
98> 634 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
Beta-minus Decay with delayed  
Double Neutron Emission
No Data Available