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Isotopes of the Element Platinum

[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
1900.012%6.5×10+11 years
1920.782%STABLE
19432.86%STABLE
19533.78%STABLE
19625.21%STABLE
1987.36%STABLE

Known Isotopes

Mass NumberHalf-lifeDecay ModeBranching Percentage
166300 microsecondsAlpha Decay100.00%
1670.9 millisecondsAlpha Decay100.00%
1682.02 millisecondsAlpha Decay100.00%
1697.0 millisecondsAlpha Decay100.00%
17013.8 millisecondsAlpha Decay98.00%
Electron CaptureNo Data Available
17145.5 millisecondsAlpha Decay90.00%
Electron Capture10.00%
17297.6 millisecondsAlpha Decay94.00%
Electron Capture6.00%
173382 millisecondsAlpha Decay100.00%
Electron Capture (suspected)   No Data Available
1740.889 secondsElectron Capture24.00%
Alpha Decay76.00%
1752.53 secondsAlpha Decay64.00%
Electron Capture36.00%
1766.33 secondsElectron Capture60.00%
Alpha Decay40.00%
17710.6 secondsElectron Capture94.30%
Alpha Decay5.70%
17820.7 secondsElectron Capture92.30%
Alpha Decay7.70%
17921.2 secondsElectron Capture99.76%
Alpha Decay0.24%
18056 secondsElectron Capture100.00%
Alpha Decay~ 0.30%
18152.0 secondsElectron Capture100.00%
Alpha Decay~ 0.08%
1822.67 minutesElectron Capture99.96%
Alpha Decay0.04%
1836.5 minutesElectron Capture100.00%
Alpha Decay~ 1.3×10-3 %
183m43 secondsIsomeric TransitionNo Data Available
Electron Capture100.00%
Alpha Decay< 4.0×10-4 %
18417.3 minutesElectron Capture100.00%
Alpha Decay~ 1.0×10-3 %
184m1.01 millisecondsIsomeric Transition100.00%
18570.9 minutesElectron Capture< 100.00%
185m33.0 minutesElectron Capture99.00%
Isomeric Transition< 2.00%
1862.08 hoursElectron Capture100.00%
Alpha Decay~ 1.4×10-4 %
1872.35 hoursElectron Capture100.00%
18810.2 daysAlpha Decay2.6×10-5 %
Electron Capture100.00%
18910.87 hoursElectron Capture100.00%
1906.5×10+11 yearsAlpha Decay100.00%
1912.83 daysElectron Capture100.00%
192STABLE--
19350 yearsElectron Capture100.00%
193m4.33 daysIsomeric Transition100.00%
194STABLE--
195STABLE--
195m4.010 daysIsomeric Transition100.00%
196STABLE--
19719.8915 hoursBeta-minus Decay100.00%
197m95.41 minutesIsomeric Transition96.70%
Beta-minus Decay3.30%
198STABLE--
19930.80 minutesBeta-minus Decay100.00%
199m13.6 secondsIsomeric Transition100.00%
20012.6 hoursBeta-minus Decay100.00%
2012.5 minutesBeta-minus Decay100.00%
20244 hoursBeta-minus Decay100.00%
202m0.28 millisecondsIsomeric Transition100.00%
20310 secondsBeta-minus Decay100.00%
20410.3 secondsBeta-minus Decay100.00%
205> 300 nanoseconds   Beta-minus DecayNo Data Available