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Holmium

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Thulium

Isotopes of the Element Erbium

[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
1620.139%STABLE
1641.601%STABLE
16633.503%STABLE
16722.869%STABLE
16826.978%STABLE
17014.910%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
142No Data AvailableNo Data AvailableNo Data Available
143No Data AvailableElectron Capture (suspected)No Data Available
144>= 200 nanosecondsElectron Capture100.00%
145No Data AvailableElectron Capture (suspected)No Data Available
145m1.0 secondsElectron Capture with
delayed Proton Emission
No Data Available
Electron Capture100.00%
1461.7 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
100.00%
1472.5 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
> 0.00%
147m1.6 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
> 0.00%
1484.6 secondsElectron Capture100.00%
1494 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
7.00%
149m8.9 secondsIsomeric Transition3.50%
Electron Capture with
delayed Proton Emission
0.18%
Electron Capture96.50%
15018.5 secondsElectron Capture100.00%
15123.5 secondsElectron Capture100.00%
151m0.58 secondsIsomeric Transition95.30%
Electron Capture4.70%
15210.3 secondsAlpha Decay90.00%
Electron Capture10.00%
15337.1 secondsAlpha Decay53.00%
Electron Capture47.00%
1543.73 minutesElectron Capture99.53%
Alpha Decay0.47%
1555.3 minutesElectron Capture99.98%
Alpha Decay0.02%
15619.5 minutesElectron Capture100.00%
Alpha Decay1.7×10-5 %
15718.65 minutesElectron Capture100.00%
157m76 millisecondsIsomeric Transition100.00%
1582.29 hoursElectron Capture100.00%
15936 minutesElectron Capture100.00%
16028.58 hoursElectron Capture100.00%
1613.21 hoursElectron Capture100.00%
162STABLE--
16375.0 minutesElectron Capture100.00%
164STABLE--
16510.36 hoursElectron Capture100.00%
166STABLE--
167STABLE--
167m2.269 secondsIsomeric Transition100.00%
168STABLE--
1699.392 daysBeta-minus Decay100.00%
170STABLE--
1717.516 hoursBeta-minus Decay100.00%
17249.3 hoursBeta-minus Decay100.00%
1731.4 minutesBeta-minus Decay100.00%
1743.2 minutesBeta-minus Decay100.00%
1751.2 minutesBeta-minus Decay100.00%
176No Data AvailableBeta-minus Decay (suspected)No Data Available
177No Data AvailableBeta-minus Decay (suspected)No Data Available