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Isotopes of the Element Niobium

[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
93100%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
81< 200 nanosecondsElectron CaptureNo Data Available
8250 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
833.8 secondsElectron Capture100.00%
849.8 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
8520.5 secondsElectron Capture100.00%
85m12 secondsElectron CaptureNo Data Available
Isomeric TransitionNo Data Available
85m13.3 secondsIsomeric TransitionNo Data Available
Electron CaptureNo Data Available
8688 secondsElectron Capture100.00%
873.75 minutesElectron Capture100.00%
87m2.6 minutesElectron CaptureNo Data Available
8814.55 minutesElectron Capture100.00%
88m7.78 minutesElectron Capture100.00%
892.03 hoursElectron Capture100.00%
89m66 minutesElectron Capture100.00%
9014.60 hoursElectron Capture100.00%
90m18.81 secondsIsomeric Transition100.00%
916.8×10+2 yearsElectron Capture100.00%
91m60.86 daysIsomeric Transition96.60%
Electron Capture3.40%
923.47×10+7 yearsElectron Capture100.00%
Beta-minus Decay< 0.05%
92m10.15 daysElectron Capture100.00%
93STABLE--
93m16.12 yearsIsomeric Transition100.00%
942.03×10+4 yearsBeta-minus Decay100.00%
94m6.263 minutesIsomeric Transition99.50%
Beta-minus Decay0.50%
9534.991 daysBeta-minus Decay100.00%
95m3.61 daysIsomeric Transition94.40%
Beta-minus Decay5.60%
9623.35 hoursBeta-minus Decay100.00%
9772.1 minutesBeta-minus Decay100.00%
97m58.7 secondsIsomeric Transition100.00%
982.86 secondsBeta-minus Decay100.00%
98m51.3 minutesBeta-minus Decay99.90%
Isomeric Transition< 0.20%
9915.0 secondsBeta-minus Decay100.00%
99m2.5 minutesIsomeric Transition< 3.80%
Beta-minus Decay> 96.20%
1001.5 secondsBeta-minus Decay100.00%
100m2.99 secondsBeta-minus Decay100.00%
1017.1 secondsBeta-minus Decay100.00%
1024.3 secondsBeta-minus Decay100.00%
102m1.3 secondsBeta-minus Decay100.00%
1031.5 secondsBeta-minus Decay100.00%
1044.9 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
0.06%
104m0.94 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
0.05%
1052.95 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
1.70%
1060.93 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
4.50%
107300 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
8.00%
108220 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
8.00%
109106 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
< 15.00%
11086 millisecondsBeta-minus Decay with
delayed Neutron Emission
40.00%
Beta-minus Decay100.00%
11151 millisecondsBeta-minus DecayNo Data Available
11233 millisecondsBeta-minus DecayNo Data Available
113> 300 nanosecondsBeta-minus DecayNo Data Available
114> 392 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
115> 394 nanoseconds   Beta-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