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Antimony Isotopes






Proton number: 51


Stable Isotopes


Antimony stable isotope number 1: 121Sb
Neutrons: 70;
Abundance: 57.21%;
Jn: 5/2+;

Antimony stable isotope number 2: 123Sb
Neutrons: 72;
Abundance: 42.79%;
Jn: 7/2+;

Natural Radioactive isotopes

There is no Antimony Natural Radioactive isotopes known

Artificial Radioactive isotopes


Antimony radioactive isotope number 1: 103Sb
Neutrons: 52;
Jn: Unknown;
Decay: ε ?;
t1/2: 1.5E-06s ≈ 1.50 µs;

Antimony radioactive isotope number 2: 104Sb
Neutrons: 53;
Jn: Unknown;
Decay: ε : 100.00 %
ε p < 7.00 %
p < 1.00 %;
t1/2: 0.44s ;

Antimony radioactive isotope number 3: 105Sb
Neutrons: 54;
Jn: 5/2+;
Decay: ε : 99.00 %
p : 1.00 %;
t1/2: 1.22s ;

Antimony radioactive isotope number 4: 106Sb
Neutrons: 55;
Jn: 4+;
Decay: ε;
t1/2: 0.6s ;

Antimony radioactive isotope number 5: 107Sb
Neutrons: 56;
Jn: 5/2+;
Decay: ε : 100.00 %;
t1/2: 4s ;

Antimony radioactive isotope number 6: 108Sb
Neutrons: 57;
Jn: 4+;
Decay: ε : 100.00 %;
t1/2: 7.4s ;

Antimony radioactive isotope number 7: 109Sb
Neutrons: 58;
Jn: 5/2+;
Decay: ε : 100.00 %;
t1/2: 17s ;

Antimony radioactive isotope number 8: 110Sb
Neutrons: 59;
Jn: 3+,4+;
Decay: ε : 100.00 %;
t1/2: 23s ;

Antimony radioactive isotope number 9: 111Sb
Neutrons: 60;
Jn: 5/2+;
Decay: ε : 100.00 %;
t1/2: 75s ;

Antimony radioactive isotope number 10: 112Sb
Neutrons: 61;
Jn: 3+;
Decay: ε : 100.00 %;
t1/2: 51.4s ;

Antimony radioactive isotope number 11: 113Sb
Neutrons: 62;
Jn: 5/2+;
Decay: ε : 100.00 %;
t1/2: 400.2s ≈ 6.67 m;

Antimony radioactive isotope number 12: 114Sb
Neutrons: 63;
Jn: 3+;
Decay: ε : 100.00 %;
t1/2: 209.4s ≈ 3.49 m;

Antimony radioactive isotope number 13: 114Sb
Neutrons: 63;
Jn: 8-;
Decay: IT : 100.00 %;
t1/2: 0.000219s ≈ 0.22 ms;

Antimony radioactive isotope number 14: 115Sb
Neutrons: 64;
Jn: 5/2+;
Decay: ε : 100.00 %;
t1/2: 1926s ≈ 32.10 m;

Antimony radioactive isotope number 15: 115Sb
Neutrons: 64;
Jn: 11/2-;
Decay: IT : 100.00 %;
t1/2: 6.2E-09s ≈ 6.20 ns;

Antimony radioactive isotope number 16: 115Sb
Neutrons: 64;
Jn: 19/2-;
Decay: IT : 100.00 %;
t1/2: 1.59E-07s ≈ 0.16 µs;

Antimony radioactive isotope number 17: 115Sb
Neutrons: 64;
Jn: 25/2+;
Decay: IT : 100.00 %;
t1/2: 4.1E-09s ≈ 4.10 ns;

Antimony radioactive isotope number 18: 116Sb
Neutrons: 65;
Jn: 3+;
Decay: ε : 100.00 %;
t1/2: 948s ≈ 15.80 m;

Antimony radioactive isotope number 19: 116Sb
Neutrons: 65;
Jn: 8-;
Decay: ε : 100.00 %;
t1/2: 3618s ≈ 1.00 h;

Antimony radioactive isotope number 20: 117Sb
Neutrons: 66;
Jn: 5/2+;
Decay: ε : 100.00 %
ε : 1.70 %;
t1/2: 10080s ≈ 2.80 h;

Antimony radioactive isotope number 21: 117Sb
Neutrons: 66;
Jn: 25/2+;
Decay: IT : 100.00 %;
t1/2: 0.000355s ≈ 0.35 ms;

Antimony radioactive isotope number 22: 118Sb
Neutrons: 67;
Jn: 1+;
Decay: ε : 100.00 %;
t1/2: 216s ≈ 3.60 m;

Antimony radioactive isotope number 23: 118Sb
Neutrons: 67;
Jn: 8-;
Decay: ε : 100.00 %;
t1/2: 18000s ≈ 5.00 h;

Antimony radioactive isotope number 24: 119Sb
Neutrons: 68;
Jn: 5/2+;
Decay: ε : 100.00 %;
t1/2: 137484s ≈ 38.19 h;

Antimony radioactive isotope number 25: 119Sb
Neutrons: 68;
Jn: 27/2+;
Decay: IT : 100.00 %;
t1/2: 0.85s ;

Antimony radioactive isotope number 26: 120Sb
Neutrons: 69;
Jn: 1+;
Decay: ε : 100.00 %;
t1/2: 953.4s ≈ 15.89 m;

Antimony radioactive isotope number 27: 120Sb
Neutrons: 69;
Jn: 8-;
Decay: ε : 100.00 %;
t1/2: 497664s ≈ 5.76 d;

Antimony radioactive isotope number 28: 122Sb
Neutrons: 71;
Jn: 2-;
Decay: β - : 97.59 %
ε : 2.41 %;
t1/2: 235336.3s ≈ 2.72 d;

Antimony radioactive isotope number 29: 122Sb
Neutrons: 71;
Jn: 8-;
Decay: IT : 100.00 %;
t1/2: 251.46s ≈ 4.19 m;

Antimony radioactive isotope number 30: 124Sb
Neutrons: 73;
Jn: 3-;
Decay: β - : 100.00 %;
t1/2: 5193504s ≈ 60.11 d;

Antimony radioactive isotope number 31: 124Sb
Neutrons: 73;
Jn: 5+;
Decay: IT : 75.00 %
β - : 25.00 %;
t1/2: 93s ;

Antimony radioactive isotope number 32: 124Sb
Neutrons: 73;
Jn: 8-;
Decay: IT : 100.00 %;
t1/2: 1212s ≈ 20.20 m;

Antimony radioactive isotope number 33: 125Sb
Neutrons: 74;
Jn: 7/2+;
Decay: β - : 100.00 %;
t1/2: 86995210s ≈ 2.76 y;

Antimony radioactive isotope number 34: 126Sb
Neutrons: 75;
Jn: 8-;
Decay: β - : 100.00 %;
t1/2: 1067040s ≈ 12.35 d;

Antimony radioactive isotope number 35: 126Sb
Neutrons: 75;
Jn: 5+;
Decay: β - : 86.00 %
IT : 14.00 %;
t1/2: 1149s ≈ 19.15 m;

Antimony radioactive isotope number 36: 126Sb
Neutrons: 75;
Jn: 3-;
Decay: IT : 100.00 %;
t1/2: 11s ;

Antimony radioactive isotope number 37: 127Sb
Neutrons: 76;
Jn: 7/2+;
Decay: β - : 100.00 %;
t1/2: 332640s ≈ 3.85 d;

Antimony radioactive isotope number 38: 128Sb
Neutrons: 77;
Jn: 8-;
Decay: β - : 100.00 %;
t1/2: 32436s ≈ 9.01 h;

Antimony radioactive isotope number 39: 128Sb
Neutrons: 77;
Jn: 5+;
Decay: β - : 96.40 %
IT : 3.60 %;
t1/2: 624s ≈ 10.40 m;

Antimony radioactive isotope number 40: 129Sb
Neutrons: 78;
Jn: 7/2+;
Decay: β - : 100.00 %;
t1/2: 15840s ≈ 4.40 h;

Antimony radioactive isotope number 41: 129Sb
Neutrons: 78;
Jn: 19/2-;
Decay: β - : 85.00 %
IT : 15.00 %;
t1/2: 1062s ≈ 17.70 m;

Antimony radioactive isotope number 42: 130Sb
Neutrons: 79;
Jn: 8-;
Decay: β - : 100.00 %;
t1/2: 2370s ≈ 39.50 m;

Antimony radioactive isotope number 43: 130Sb
Neutrons: 79;
Jn: 4,5+;
Decay: β - : 100.00 %;
t1/2: 378s ≈ 6.30 m;

Antimony radioactive isotope number 44: 131Sb
Neutrons: 80;
Jn: 7/2+;
Decay: β - : 100.00 %;
t1/2: 1381.8s ≈ 23.03 m;

Antimony radioactive isotope number 45: 132Sb
Neutrons: 81;
Jn: 4+;
Decay: β - : 100.00 %;
t1/2: 167.4s ≈ 2.79 m;

Antimony radioactive isotope number 46: 132Sb
Neutrons: 81;
Jn: 8-;
Decay: β - : 100.00 %;
t1/2: 246s ≈ 4.10 m;

Antimony radioactive isotope number 47: 133Sb
Neutrons: 82;
Jn: 7/2+;
Decay: β - : 100.00 %;
t1/2: 150s ≈ 2.50 m;

Antimony radioactive isotope number 48: 134Sb
Neutrons: 83;
Jn: 0-;
Decay: β - : 100.00 %;
t1/2: 0.78s ;

Antimony radioactive isotope number 49: 134Sb
Neutrons: 83;
Jn: 7-;
Decay: β - : 100.00 %
β -n : 0.09 %;
t1/2: 10.07s ;

Antimony radioactive isotope number 50: 135Sb
Neutrons: 84;
Jn: 7/2+;
Decay: β - : 100.00 %
β -n : 22.00 %;
t1/2: 1.68s ;

Antimony radioactive isotope number 51: 136Sb
Neutrons: 85;
Jn: 1-;
Decay: β - : 100.00 %
β -n : 16.30 %;
t1/2: 0.923s ;

Antimony radioactive isotope number 52: 137Sb
Neutrons: 86;
Jn: Unknown;
Decay: β -n ?
β - ?;
t1/2: 1.5E-07s ≈ 0.15 µs;

Antimony radioactive isotope number 53: 138Sb
Neutrons: 87;
Jn: Unknown;
Decay: β -n ?
β - ?;
t1/2: 3E-07s ≈ 0.30 µs;

Antimony radioactive isotope number 54: 139Sb
Neutrons: 88;
Jn: Unknown;
Decay: β - ?;
t1/2: 1.5E-07s ≈ 0.15 µs;
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