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Isotopes of the Element Yttrium

[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
89100%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
76> 200 nanosecondsProton EmissionNo Data Available
Electron CaptureNo Data Available
7757 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
Proton EmissionNo Data Available
7853 millisecondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
78m5.8 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
7914.8 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
8030.1 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
80m4.8 secondsIsomeric Transition81.00%
Electron Capture19.00%
8170.4 secondsElectron Capture100.00%
828.30 secondsElectron Capture100.00%
837.08 minutesElectron Capture100.00%
83m2.85 minutesElectron Capture60.00%
Isomeric Transition40.00%
8439.5 minutesElectron Capture100.00%
84m4.6 secondsElectron Capture100.00%
852.68 hoursElectron Capture100.00%
85m4.86 hoursElectron Capture100.00%
Isomeric Transition< 2.0×10-3 %
8614.74 hoursElectron Capture100.00%
86m48 minutesIsomeric Transition99.31%
Electron Capture0.69%
8779.8 hoursElectron Capture100.00%
87m13.37 hoursIsomeric Transition98.43%
Electron Capture1.57%
88106.626 daysElectron Capture100.00%
89STABLE--
89m15.663 secondsIsomeric Transition100.00%
9064.053 hoursBeta-minus Decay100.00%
90m3.19 hoursIsomeric Transition100.00%
Beta-minus Decay1.8×10-3 %
9158.51 daysBeta-minus Decay100.00%
91m49.71 minutesIsomeric Transition100.00%
Beta-minus Decay< 1.50%
923.54 hoursBeta-minus Decay100.00%
9310.18 hoursBeta-minus Decay100.00%
93m0.82 secondsIsomeric Transition100.00%
9418.7 minutesBeta-minus Decay100.00%
9510.3 minutesBeta-minus Decay100.00%
965.34 secondsBeta-minus Decay100.00%
96m9.6 secondsBeta-minus Decay100.00%
973.75 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
0.06%
97m1.17 secondsBeta-minus Decay> 99.30%
Isomeric Transition< 0.70%
Beta-minus Decay with
delayed Neutron Emission
< 0.08%
97m1142 millisecondsIsomeric Transition98.40%
Beta-minus Decay1.60%
980.548 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
0.33%
98m2.0 secondsBeta-minus Decay> 80.00%
Isomeric Transition< 20.00%
Beta-minus Decay with
delayed Neutron Emission
3.40%
991.484 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
1.70%
100735 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
0.92%
100m0.94 secondsBeta-minus Decay100.00%
1010.45 secondsBeta-minus Decay with
delayed Neutron Emission
1.94%
Beta-minus Decay100.00%
1020.36 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
4.90%
102m0.298 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
4.90%
1030.23 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
8.00%
104197 millisecondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
No Data Available
10585 millisecondsBeta-minus Decay with
delayed Neutron Emission
< 82.00%
Beta-minus DecayNo Data Available
10662 millisecondsBeta-minus DecayNo Data Available
10741 millisecondsBeta-minus Decay100.00%
10825 millisecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
109> 393 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