It's Elemental

Iridium

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The Periodic Table of Elements

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Isotopes of the Element Platinum

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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
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 nanosecondsBeta-minus DecayNo Data Available