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Strontium Isotopes






Proton number: 38


Stable Isotopes


Strontium stable isotope number 1: 84Sr
Neutrons: 46;
Abundance: 0.56%;
Jn: 0+;

Strontium stable isotope number 2: 86Sr
Neutrons: 48;
Abundance: 9.86%;
Jn: 0+;

Strontium stable isotope number 3: 87Sr
Neutrons: 49;
Abundance: 7%;
Jn: 9/2+;

Strontium stable isotope number 4: 88Sr
Neutrons: 50;
Abundance: 82.58%;
Jn: 0+;

Natural Radioactive isotopes

There is no Strontium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Strontium radioactive isotope number 1: 73Sr
Neutrons: 35;
Jn: Unknown;
Decay: ε : 100.00 %
ε p > 0.00 %;
t1/2: 0.025s ≈ 25.00 ms;

Strontium radioactive isotope number 2: 74Sr
Neutrons: 36;
Jn: 0+;
Decay: ε;
t1/2: 1.2E-06s ≈ 1.20 µs;

Strontium radioactive isotope number 3: 75Sr
Neutrons: 37;
Jn: 3/2-;
Decay: ε : 100.00 %
ε p : 5.20 %;
t1/2: 0.088s ≈ 88.00 ms;

Strontium radioactive isotope number 4: 76Sr
Neutrons: 38;
Jn: 0+;
Decay: ε : 100.00 %
ε p : 0.34 %;
t1/2: 7.89s ;

Strontium radioactive isotope number 5: 77Sr
Neutrons: 39;
Jn: 5/2+;
Decay: ε : 100.00 %
ε p < 0.25 %;
t1/2: 9s ;

Strontium radioactive isotope number 6: 78Sr
Neutrons: 40;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 150s ≈ 2.50 m;

Strontium radioactive isotope number 7: 79Sr
Neutrons: 41;
Jn: 3/2-;
Decay: ε : 100.00 %;
t1/2: 135s ≈ 2.25 m;

Strontium radioactive isotope number 8: 80Sr
Neutrons: 42;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 6378s ≈ 1.77 h;

Strontium radioactive isotope number 9: 81Sr
Neutrons: 43;
Jn: 1/2-;
Decay: ε : 100.00 %;
t1/2: 1338s ≈ 22.30 m;

Strontium radioactive isotope number 10: 82Sr
Neutrons: 44;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 2207520s ≈ 25.55 d;

Strontium radioactive isotope number 11: 83Sr
Neutrons: 45;
Jn: 7/2+;
Decay: ε : 100.00 %;
t1/2: 116676s ≈ 32.41 h;

Strontium radioactive isotope number 12: 83Sr
Neutrons: 45;
Jn: 1/2-;
Decay: IT : 100.00 %;
t1/2: 4.95s ;

Strontium radioactive isotope number 13: 85Sr
Neutrons: 47;
Jn: 9/2+;
Decay: ε : 100.00 %;
t1/2: 5602176s ≈ 64.84 d;

Strontium radioactive isotope number 14: 85Sr
Neutrons: 47;
Jn: 1/2-;
Decay: IT : 86.60 %
ε : 13.40 %;
t1/2: 4057.8s ≈ 1.13 h;

Strontium radioactive isotope number 15: 87Sr
Neutrons: 49;
Jn: 1/2-;
Decay: IT : 99.70 %
ε : 0.30 %;
t1/2: 10134s ≈ 2.81 h;

Strontium radioactive isotope number 16: 89Sr
Neutrons: 51;
Jn: 5/2+;
Decay: β - : 100.00 %;
t1/2: 4369248s ≈ 50.57 d;

Strontium radioactive isotope number 17: 90Sr
Neutrons: 52;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 911390400s ≈ 28.90 y;

Strontium radioactive isotope number 18: 91Sr
Neutrons: 53;
Jn: 5/2+;
Decay: β - : 100.00 %;
t1/2: 34668s ≈ 9.63 h;

Strontium radioactive isotope number 19: 92Sr
Neutrons: 54;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 9576s ≈ 2.66 h;

Strontium radioactive isotope number 20: 93Sr
Neutrons: 55;
Jn: 5/2+;
Decay: β - : 100.00 %;
t1/2: 445.38s ≈ 7.42 m;

Strontium radioactive isotope number 21: 94Sr
Neutrons: 56;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 75.3s ;

Strontium radioactive isotope number 22: 95Sr
Neutrons: 57;
Jn: 1/2+;
Decay: β - : 100.00 %;
t1/2: 23.9s ;

Strontium radioactive isotope number 23: 96Sr
Neutrons: 58;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 1.07s ;

Strontium radioactive isotope number 24: 97Sr
Neutrons: 59;
Jn: 1/2+;
Decay: β - : 100.00 %
β -n ≤ 0.05 %;
t1/2: 0.429s ;

Strontium radioactive isotope number 25: 98Sr
Neutrons: 60;
Jn: 0+;
Decay: β - : 100.00 %
β -n : 0.25 %;
t1/2: 0.653s ;

Strontium radioactive isotope number 26: 99Sr
Neutrons: 61;
Jn: 3/2+;
Decay: β - : 100.00 %
β -n : 0.10 %;
t1/2: 0.269s ;

Strontium radioactive isotope number 27: 100Sr
Neutrons: 62;
Jn: 0+;
Decay: β - : 100.00 %
β -n : 0.78 %;
t1/2: 0.202s ;

Strontium radioactive isotope number 28: 101Sr
Neutrons: 63;
Jn: 5/2-;
Decay: β - : 100.00 %
β -n : 2.37 %;
t1/2: 0.118s ;

Strontium radioactive isotope number 29: 102Sr
Neutrons: 64;
Jn: 0+;
Decay: β - : 100.00 %
β -n : 4.80 %;
t1/2: 0.069s ≈ 69.00 ms;

Strontium radioactive isotope number 30: 103Sr
Neutrons: 65;
Jn: Unknown;
Decay: β -;
t1/2: 1.5E-07s ≈ 0.15 µs;

Strontium radioactive isotope number 31: 104Sr
Neutrons: 66;
Jn: 0+;
Decay: β - ?;
t1/2: 3E-07s ≈ 0.30 µs;

Strontium radioactive isotope number 32: 105Sr
Neutrons: 67;
Jn: Unknown;
Decay: β -;
t1/2: unknowns ;
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