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Yttrium Isotopes






Proton number: 39


Stable Isotopes


Yttrium stable isotope number 1: 89Y
Neutrons: 50;
Abundance: 100%;
Jn: 1/2-;

Natural Radioactive isotopes

There is no Yttrium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Yttrium radioactive isotope number 1: 76Y
Neutrons: 37;
Jn: Unknown;
Decay: ε ?
p ?;
t1/2: 2E-07s ≈ 0.20 µs;

Yttrium radioactive isotope number 2: 77Y
Neutrons: 38;
Jn: Unknown;
Decay: ε : 100.00 %
ε p;
t1/2: 0.06s ≈ 60.00 ms;

Yttrium radioactive isotope number 3: 78Y
Neutrons: 39;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 0.05s ≈ 50.00 ms;

Yttrium radioactive isotope number 4: 78Y
Neutrons: 39;
Jn: 5+;
Decay: ε : 100.00 %;
t1/2: 5.7s ;

Yttrium radioactive isotope number 5: 79Y
Neutrons: 40;
Jn: 5/2+;
Decay: ε : 100.00 %
ε p;
t1/2: 14.8s ;

Yttrium radioactive isotope number 6: 80Y
Neutrons: 41;
Jn: 4-;
Decay: ε : 100.00 %
ε p;
t1/2: 30.1s ;

Yttrium radioactive isotope number 7: 80Y
Neutrons: 41;
Jn: 1-;
Decay: IT : 81.00 %
ε : 19.00 %;
t1/2: 4.8s ;

Yttrium radioactive isotope number 8: 80Y
Neutrons: 41;
Jn: 2+;
Decay: IT : 100.00 %;
t1/2: 4.7E-06s ≈ 4.70 µs;

Yttrium radioactive isotope number 9: 81Y
Neutrons: 42;
Jn: 5/2+;
Decay: ε : 100.00 %;
t1/2: 70.4s ;

Yttrium radioactive isotope number 10: 82Y
Neutrons: 43;
Jn: 1+;
Decay: ε : 100.00 %;
t1/2: 8.3s ;

Yttrium radioactive isotope number 11: 83Y
Neutrons: 44;
Jn: 9/2+;
Decay: ε : 100.00 %;
t1/2: 424.8s ≈ 7.08 m;

Yttrium radioactive isotope number 12: 83Y
Neutrons: 44;
Jn: 3/2-;
Decay: ε : 60.00 %
IT : 40.00 %;
t1/2: 171s ≈ 2.85 m;

Yttrium radioactive isotope number 13: 84Y
Neutrons: 45;
Jn: 1+;
Decay: ε : 100.00 %;
t1/2: 4.6s ;

Yttrium radioactive isotope number 14: 84Y
Neutrons: 45;
Jn: 5-;
Decay: ε : 100.00 %;
t1/2: 2370s ≈ 39.50 m;

Yttrium radioactive isotope number 15: 85Y
Neutrons: 46;
Jn: 1/2-;
Decay: ε : 100.00 %;
t1/2: 9648s ≈ 2.68 h;

Yttrium radioactive isotope number 16: 85Y
Neutrons: 46;
Jn: 9/2+;
Decay: ε : 100.00 %
IT < 2.0E-3 %;
t1/2: 17496s ≈ 4.86 h;

Yttrium radioactive isotope number 17: 86Y
Neutrons: 47;
Jn: 4-;
Decay: ε : 100.00 %;
t1/2: 53064s ≈ 14.74 h;

Yttrium radioactive isotope number 18: 86Y
Neutrons: 47;
Jn: 8+;
Decay: IT : 99.31 %
ε : 0.69 %;
t1/2: 2880s ≈ 48.00 m;

Yttrium radioactive isotope number 19: 87Y
Neutrons: 48;
Jn: 1/2-;
Decay: ε : 100.00 %;
t1/2: 287280s ≈ 3.33 d;

Yttrium radioactive isotope number 20: 87Y
Neutrons: 48;
Jn: 9/2+;
Decay: IT : 98.43 %
ε : 1.57 %;
t1/2: 48132s ≈ 13.37 h;

Yttrium radioactive isotope number 21: 88Y
Neutrons: 49;
Jn: 4-;
Decay: ε : 100.00 %;
t1/2: 9212486s ≈ 106.63 d;

Yttrium radioactive isotope number 22: 88Y
Neutrons: 49;
Jn: 1+;
Decay: IT : 100.00 %;
t1/2: 0.000301s ≈ 0.30 ms;

Yttrium radioactive isotope number 23: 88Y
Neutrons: 49;
Jn: 8+;
Decay: IT : 100.00 %;
t1/2: 0.01397s ≈ 13.97 ms;

Yttrium radioactive isotope number 24: 89Y
Neutrons: 50;
Jn: 9/2+;
Decay: IT : 100.00 %;
t1/2: 15.28s ;

Yttrium radioactive isotope number 25: 90Y
Neutrons: 51;
Jn: 2-;
Decay: β - : 100.00 %;
t1/2: 230590.8s ≈ 2.67 d;

Yttrium radioactive isotope number 26: 90Y
Neutrons: 51;
Jn: 7+;
Decay: IT : 100.00 %
β - : 1.8E-3 %;
t1/2: 11484s ≈ 3.19 h;

Yttrium radioactive isotope number 27: 91Y
Neutrons: 52;
Jn: 1/2-;
Decay: β - : 100.00 %;
t1/2: 5055264s ≈ 58.51 d;

Yttrium radioactive isotope number 28: 91Y
Neutrons: 52;
Jn: 9/2+;
Decay: IT : 100.00 %
β - < 1.50 %;
t1/2: 2982.6s ≈ 49.71 m;

Yttrium radioactive isotope number 29: 92Y
Neutrons: 53;
Jn: 2-;
Decay: β - : 100.00 %;
t1/2: 12744s ≈ 3.54 h;

Yttrium radioactive isotope number 30: 93Y
Neutrons: 54;
Jn: 1/2-;
Decay: β - : 100.00 %;
t1/2: 36648s ≈ 10.18 h;

Yttrium radioactive isotope number 31: 93Y
Neutrons: 54;
Jn: 7/2+;
Decay: IT : 100.00 %;
t1/2: 0.82s ;

Yttrium radioactive isotope number 32: 94Y
Neutrons: 55;
Jn: 2-;
Decay: β - : 100.00 %;
t1/2: 1122s ≈ 18.70 m;

Yttrium radioactive isotope number 33: 95Y
Neutrons: 56;
Jn: 1/2-;
Decay: β - : 100.00 %;
t1/2: 618s ≈ 10.30 m;

Yttrium radioactive isotope number 34: 96Y
Neutrons: 57;
Jn: 0-;
Decay: β - : 100.00 %;
t1/2: 5.34s ;

Yttrium radioactive isotope number 35: 96Y
Neutrons: 57;
Jn: 8+;
Decay: β - : 100.00 %;
t1/2: 9.6s ;

Yttrium radioactive isotope number 36: 97Y
Neutrons: 58;
Jn: 1/2-;
Decay: β - : 100.00 %
β -n : 0.058 %;
t1/2: 3.75s ;

Yttrium radioactive isotope number 37: 97Y
Neutrons: 58;
Jn: 9/2+;
Decay: β - > 99.30 %
IT < 0.70 %
β -n < 0.08 %;
t1/2: 1.17s ;

Yttrium radioactive isotope number 38: 97Y
Neutrons: 58;
Jn: 27/2-;
Decay: IT > 80.00 % β - < 20.00 %;
t1/2: 0.142s ;

Yttrium radioactive isotope number 39: 98Y
Neutrons: 59;
Jn: 0-;
Decay: β - : 100.00 %
β -n : 0.33 %;
t1/2: 0.548s ;

Yttrium radioactive isotope number 40: 98Y
Neutrons: 59;
Jn: 4,5;
Decay: β - > 80.00 %
IT < 20.00 %
β -n : 3.40 %;
t1/2: 2s ;

Yttrium radioactive isotope number 41: 99Y
Neutrons: 60;
Jn: 5/2+;
Decay: β - : 100.00 %
β -n : 1.90 %;
t1/2: 1.47s ;

Yttrium radioactive isotope number 42: 100Y
Neutrons: 61;
Jn: 1-,2-;
Decay: β - : 100.00 %
β -n : 0.92 %;
t1/2: 0.735s ;

Yttrium radioactive isotope number 43: 100Y
Neutrons: 61;
Jn: 3,4,5;
Decay: β - : 100.00 %;
t1/2: 0.94s ;

Yttrium radioactive isotope number 44: 101Y
Neutrons: 62;
Jn: 5/2+;
Decay: β - : 100.00 %
β -n : 1.94 %;
t1/2: 0.45s ;

Yttrium radioactive isotope number 45: 102Y
Neutrons: 63;
Jn: Unknown;
Decay: β - : 100.00 %
β -n : 4.90 %;
t1/2: 0.36s ;

Yttrium radioactive isotope number 46: 102Y
Neutrons: 63;
Jn: Unknown;
Decay: β - : 100.00 %
β -n : 4.90 %;
t1/2: 0.3s ;

Yttrium radioactive isotope number 47: 103Y
Neutrons: 64;
Jn: 5/2+;
Decay: β - : 100.00 %
β -n : 8.00 %;
t1/2: 0.23s ;

Yttrium radioactive isotope number 48: 104Y
Neutrons: 65;
Jn: Unknown;
Decay: β - : 100.0 %
β -n ?;
t1/2: 0.18s ;

Yttrium radioactive isotope number 49: 105Y
Neutrons: 66;
Jn: Unknown;
Decay: β - ?;
t1/2: unknowns ;

Yttrium radioactive isotope number 50: 106Y
Neutrons: 67;
Jn: Unknown;
Decay: β -;
t1/2: 1.5E-07s ≈ 0.15 µs;

Yttrium radioactive isotope number 51: 107Y
Neutrons: 68;
Jn: 5/2+;
Decay: β - : 100.00 %;
t1/2: 0.03s ≈ 30.00 ms;

Yttrium radioactive isotope number 52: 108Y
Neutrons: 69;
Jn: Unknown;
Decay: β -
β -n;
t1/2: 0.02s ≈ 20.00 ms;
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