Notable Isotopes 
184Os [108 neutrons]
Abundance: 0.02%
Half life: 5.6 x 1013 years [ Alpha Decay ]
Decay Energy: 2.966 MeVDecays to 180W.
185Os [109 neutrons]Abundance: synthetic
Half life: 93.6 days [ Electron Capture ]
Decay Energy: 1.013 MeVDecays to 185Re.
186Os [110 neutrons]Abundance: 1.58%
Half life: 2.0 x 1015 years [ Alpha Decay ]
Decay Energy: 2.822 MeVDecays to 182W.
187Os [111 neutrons]Abundance: 1.6%
Stable with 111 neutrons
| 187Os is the daughter of 187Re (half-llife 4.56 x 1010 years) and is used extensively in dating terrestrial as well as meteoric rocks. It has also been used to measure the intensity of continental weathering over geologic time. |
188Os [112 neutrons]Abundance: 13.3%
Stable with 112 neutrons
189Os [113 neutrons]Abundance: 16.1%
Stable with 113 neutrons
190Os [114 neutrons]Abundance: 24.6%
Stable with 114 neutrons
191Os [115 neutrons]Abundance: synthetic
Half life: 15.4 days [ beta- ]
Decay Energy: 0.314 MeVDecays to 191Ir.
192Os [116 neutrons]Abundance: 41.0%
Stable with 116 neutrons
193Os [117 neutrons]Abundance: synthetic
Half life: 30.11 days [ beta- ]
Decay Energy: 1.141 MeVDecays to 193Ir.
194Os [118 neutrons]Abundance: synthetic
Half life: 6 years [ beta- ]
Decay Energy: 0.097 MeVDecays to 194Ir.