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Osmium Isotopes

Proton number: 76

Stable Isotopes


Osmium stable isotope number 1: 187Os
Neutrons: 111;
Abundance: 1.6%;
Jn: 1/2-;

Osmium stable isotope number 2: 188Os
Neutrons: 112;
Abundance: 13.29%;
Jn: 0+;

Osmium stable isotope number 3: 189Os
Neutrons: 113;
Abundance: 16.21%;
Jn: 3/2-;

Osmium stable isotope number 4: 190Os
Neutrons: 114;
Abundance: 26.36%;
Jn: 0+;

Osmium stable isotope number 5: 192Os
Neutrons: 116;
Abundance: 40.93%;
Jn: 0+;

Natural Radioactive isotopes


Osmium radioactive isotope number 1: 184Os
Neutrons: 108;
Abundance: 0.02%;
Jn: 0+;
Decay: α;
t1/2: 1.766016E+21s ≈ 5.600000e+13 y;

Osmium radioactive isotope number 2: 186Os
Neutrons: 110;
Abundance: 1.59%;
Jn: 0+;
Decay: α : 100.00 %;
t1/2: 6.3072E+22s ≈ 2.000000e+15 y;

Artificial Radioactive isotopes


Osmium radioactive isotope number 1: 162Os
Neutrons: 86;
Jn: 0+;
Decay: α : 100.00 %;
t1/2: 0.0019s ≈ 1.90 ms;

Osmium radioactive isotope number 2: 163Os
Neutrons: 87;
Jn: Unknown;
Decay: α ~ 100.00 %
ε;
t1/2: 0.0055s ≈ 5.50 ms;

Osmium radioactive isotope number 3: 164Os
Neutrons: 88;
Jn: 0+;
Decay: α : 98.00 %
ε : 2.00 %;
t1/2: 0.021s ≈ 21.00 ms;

Osmium radioactive isotope number 4: 165Os
Neutrons: 89;
Jn: 7/2-;
Decay: α > 60.00 %
ε < 40.00 %;
t1/2: 0.071s ≈ 71.00 ms;

Osmium radioactive isotope number 5: 166Os
Neutrons: 90;
Jn: 0+;
Decay: α : 72.00 %
ε : 18.00 %;
t1/2: 0.181s ;

Osmium radioactive isotope number 6: 167Os
Neutrons: 91;
Jn: Unknown;
Decay: α : 57.00 %
ε : 43.00 %;
t1/2: 0.81s ;

Osmium radioactive isotope number 7: 168Os
Neutrons: 92;
Jn: 0+;
Decay: α : 40.00 %
ε;
t1/2: 2.1s ;

Osmium radioactive isotope number 8: 169Os
Neutrons: 93;
Jn: Unknown;
Decay: ε : 88.80 %
α : 11.20 %;
t1/2: 3.4s ;

Osmium radioactive isotope number 9: 170Os
Neutrons: 94;
Jn: 0+;
Decay: ε : 91.40 %
α : 8.60 %;
t1/2: 7.46s ;

Osmium radioactive isotope number 10: 171Os
Neutrons: 95;
Jn: 5/2-;
Decay: ε : 98.20 %
α : 1.80 %;
t1/2: 8.3s ;

Osmium radioactive isotope number 11: 172Os
Neutrons: 96;
Jn: 0+;
Decay: α : 1.10 %
ε;
t1/2: 19.2s ;

Osmium radioactive isotope number 12: 173Os
Neutrons: 97;
Jn: 5/2-;
Decay: α : 0.4 %
ε;
t1/2: 22.4s ;

Osmium radioactive isotope number 13: 174Os
Neutrons: 98;
Jn: 0+;
Decay: ε : 99.98 %
α : 0.02 %;
t1/2: 44s ;

Osmium radioactive isotope number 14: 175Os
Neutrons: 99;
Jn: 5/2-;
Decay: ε : 100.00 %;
t1/2: 84s ;

Osmium radioactive isotope number 15: 176Os
Neutrons: 100;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 216s ≈ 3.60 m;

Osmium radioactive isotope number 16: 177Os
Neutrons: 101;
Jn: 1/2-;
Decay: ε : 100.00 %;
t1/2: 180s ≈ 3.00 m;

Osmium radioactive isotope number 17: 178Os
Neutrons: 102;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 300s ≈ 5.00 m;

Osmium radioactive isotope number 18: 179Os
Neutrons: 103;
Jn: 1/2-;
Decay: ε : 100.00 %;
t1/2: 390s ≈ 6.50 m;

Osmium radioactive isotope number 19: 180Os
Neutrons: 104;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 1290s ≈ 21.50 m;

Osmium radioactive isotope number 20: 181Os
Neutrons: 105;
Jn: 1/2-;
Decay: ε : 100.00 %;
t1/2: 6300s ≈ 1.75 h;

Osmium radioactive isotope number 21: 181Os
Neutrons: 105;
Jn: 7/2-;
Decay: ε ~ 100.00 %
IT ≤ 3.00 %;
t1/2: 162s ≈ 2.70 m;

Osmium radioactive isotope number 22: 182Os
Neutrons: 106;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 79560s ≈ 22.10 h;

Osmium radioactive isotope number 23: 183Os
Neutrons: 107;
Jn: 9/2+;
Decay: ε : 100.00 %;
t1/2: 46800s ≈ 13.00 h;

Osmium radioactive isotope number 24: 183Os
Neutrons: 107;
Jn: 1/2-;
Decay: ε : 85.00 %
IT : 15.00 %;
t1/2: 35640s ≈ 9.90 h;

Osmium radioactive isotope number 25: 185Os
Neutrons: 109;
Jn: 1/2-;
Decay: ε : 100.00 %;
t1/2: 8087040s ≈ 93.60 d;

Osmium radioactive isotope number 26: 189Os
Neutrons: 113;
Jn: 9/2-;
Decay: IT : 100.00 %;
t1/2: 20916s ≈ 5.81 h;

Osmium radioactive isotope number 27: 190Os
Neutrons: 114;
Jn: 10-;
Decay: IT : 100.00 %;
t1/2: 594s ≈ 9.90 m;

Osmium radioactive isotope number 28: 191Os
Neutrons: 115;
Jn: 9/2-;
Decay: β - : 100.00 %;
t1/2: 1330560s ≈ 15.40 d;

Osmium radioactive isotope number 29: 191Os
Neutrons: 115;
Jn: 3/2-;
Decay: IT : 100.00 %;
t1/2: 47160s ≈ 13.10 h;

Osmium radioactive isotope number 30: 192Os
Neutrons: 116;
Jn: 10-;
Decay: IT > 87.00 %
β - < 13.00 %;
t1/2: 5.9s ;

Osmium radioactive isotope number 31: 193Os
Neutrons: 117;
Jn: 3/2-;
Decay: β - : 100.00 %;
t1/2: 108396s ≈ 30.11 h;

Osmium radioactive isotope number 32: 194Os
Neutrons: 118;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 189216000s ≈ 6.00 y;

Osmium radioactive isotope number 33: 195Os
Neutrons: 119;
Jn: Unknown;
Decay: β - ?;
t1/2: 540s ≈ 9.00 m;

Osmium radioactive isotope number 34: 196Os
Neutrons: 120;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 2094s ≈ 34.90 m;

Osmium radioactive isotope number 35: 197Os
Neutrons: 121;
Jn: Unknown;
Decay: β - : 100.00 %;
t1/2: 168s ≈ 2.80 m;

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