It's Elemental

Cesium

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Lanthanum

Isotopes of the Element Barium

[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
1300.106%STABLE
1320.101%> 3.0×10+21 years
1342.417%STABLE
1356.592%STABLE
1367.854%STABLE
13711.232%STABLE
13871.698%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
112No Data AvailableNo Data AvailableNo Data Available
113No Data AvailableNo Data AvailableNo Data Available
1140.43 secondsEmission of a carbon-12 nucleus< 0.0034%
Electron Capture99.10%
Electron Capture with
delayed Proton Emission
20.00%
Alpha Decay0.90%
1150.45 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
> 15.00%
1161.3 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
3.00%
1171.75 secondsElectron Capture100.00%
Electron Capture with
delayed Alpha Decay
> 0.00%
Electron Capture with
delayed Proton Emission
> 0.00%
1185.5 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
No Data Available
1195.4 secondsElectron Capture100.00%
Electron Capture with
delayed Proton Emission
< 25.00%
12024 secondsElectron Capture100.00%
12129.7 secondsElectron Capture100.00%
1221.95 minutesElectron Capture100.00%
1232.7 minutesElectron Capture100.00%
12411.0 minutesElectron Capture100.00%
1253.3 minutesElectron Capture100.00%
126100 minutesElectron Capture100.00%
12712.7 minutesElectron Capture100.00%
127m1.9 secondsIsomeric Transition100.00%
1282.43 daysElectron Capture100.00%
1292.23 hoursElectron Capture100.00%
129m2.16 hoursElectron Capture<= 100.00%
Isomeric TransitionNo Data Available
130STABLE--
130m9.4 millisecondsIsomeric Transition100.00%
13111.50 daysElectron Capture100.00%
131m14.6 minutesIsomeric Transition100.00%
132> 3.0×10+21 yearsDouble Electron CaptureNo Data Available
13310.551 yearsElectron Capture100.00%
133m38.93 hoursElectron Capture0.01%
Isomeric Transition99.99%
134STABLE--
135STABLE--
135m28.7 hoursIsomeric Transition100.00%
136STABLE--
136m0.3084 secondsIsomeric Transition100.00%
137STABLE--
137m2.552 minutesIsomeric Transition100.00%
138STABLE--
13983.06 minutesBeta-minus Decay100.00%
14012.7527 daysBeta-minus Decay100.00%
14118.27 minutesBeta-minus Decay100.00%
14210.6 minutesBeta-minus Decay100.00%
14314.5 secondsBeta-minus Decay100.00%
14411.5 secondsBeta-minus Decay100.00%
1454.31 secondsBeta-minus Decay100.00%
1462.22 secondsBeta-minus Decay100.00%
1470.894 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
0.06%
1480.612 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
0.40%
1490.344 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
0.43%
1500.3 secondsBeta-minus Decay100.00%
Beta-minus Decay with
delayed Neutron Emission
No Data Available
151> 300 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
152> 406 nanosecondsBeta-minus DecayNo Data Available
Beta-minus Decay with
delayed Neutron Emission
No Data Available
153No Data AvailableBeta-minus Decay (suspected)No Data Available