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Tantalum Isotopes

Proton number: 73

Stable Isotopes


Tantalum stable isotope number 1: 181Ta
Neutrons: 108;
Abundance: 99.988%;
Jn: 7/2+;

Natural Radioactive isotopes


Tantalum radioactive isotope number 1: 180Ta
Neutrons: 107;
Abundance: 0.012%;
Jn: 9-;
Decay: Unknown;
t1/2: 3.78432E+22s ≈ 1.200000e+15 y;

Artificial Radioactive isotopes


Tantalum radioactive isotope number 1: 155Ta
Neutrons: 82;
Jn: 11/2-;
Decay: p : 100.00 %;
t1/2: 1.2E-05s ≈ 12.00 µs;

Tantalum radioactive isotope number 2: 156Ta
Neutrons: 83;
Jn: 2-;
Decay: p ~ 100.00 %
ε;
t1/2: 0.144s ;

Tantalum radioactive isotope number 3: 156Ta
Neutrons: 83;
Jn: 9+;
Decay: ε : 95.80 %
p : 4.20 %;
t1/2: 0.36s ;

Tantalum radioactive isotope number 4: 157Ta
Neutrons: 84;
Jn: 1/2+;
Decay: α : 96.60 %
p : 3.40 %;
t1/2: 0.0101s ≈ 10.10 ms;

Tantalum radioactive isotope number 5: 157Ta
Neutrons: 84;
Jn: 11/2-;
Decay: α : 100.00 %;
t1/2: 0.0043s ≈ 4.30 ms;

Tantalum radioactive isotope number 6: 157Ta
Neutrons: 84;
Jn: 25/2-;
Decay: α : 100.00 %;
t1/2: 0.0017s ≈ 1.70 ms;

Tantalum radioactive isotope number 7: 158Ta
Neutrons: 85;
Jn: 2-;
Decay: α ~ 91.00 %
ε ~ 9.00 %;
t1/2: 0.055s ≈ 55.00 ms;

Tantalum radioactive isotope number 8: 158Ta
Neutrons: 85;
Jn: 9+;
Decay: α : 95.00 %
ε : 5.00 %;
t1/2: 0.0367s ≈ 36.70 ms;

Tantalum radioactive isotope number 9: 159Ta
Neutrons: 86;
Jn: 1/2-;
Decay: ε : 66.00 %
α : 34.00 %;
t1/2: 0.83s ;

Tantalum radioactive isotope number 10: 159Ta
Neutrons: 86;
Jn: 11/2-;
Decay: α : 55.00 %
ε : 45.00 %;
t1/2: 0.515s ;

Tantalum radioactive isotope number 11: 160Ta
Neutrons: 87;
Jn: Unknown;
Decay: ε : 66.00 %
α : 34.00 %;
t1/2: 1.55s ;

Tantalum radioactive isotope number 12: 160Ta
Neutrons: 87;
Jn: Unknown;
Decay: Unknown;
t1/2: 1.7s ;

Tantalum radioactive isotope number 13: 161Ta
Neutrons: 88;
Jn: Unknown;
Decay: ε : 95.00 %
α ?;
t1/2: 2.89s ;

Tantalum radioactive isotope number 14: 162Ta
Neutrons: 89;
Jn: Unknown;
Decay: ε : 99.93 %
α : 0.07 %;
t1/2: 3.57s ;

Tantalum radioactive isotope number 15: 163Ta
Neutrons: 90;
Jn: Unknown;
Decay: ε ~ 99.80 %
α ~ 0.20 %;
t1/2: 10.6s ;

Tantalum radioactive isotope number 16: 164Ta
Neutrons: 91;
Jn: 3+;
Decay: ε : 100.00 %;
t1/2: 14.2s ;

Tantalum radioactive isotope number 17: 165Ta
Neutrons: 92;
Jn: Unknown;
Decay: ε : 100.00 %;
t1/2: 31s ;

Tantalum radioactive isotope number 18: 166Ta
Neutrons: 93;
Jn: 2+;
Decay: ε : 100.00 %;
t1/2: 34.4s ;

Tantalum radioactive isotope number 19: 167Ta
Neutrons: 94;
Jn: 3/2+;
Decay: ε : 100.00 %;
t1/2: 80s ;

Tantalum radioactive isotope number 20: 168Ta
Neutrons: 95;
Jn: 2-,3+;
Decay: ε : 100.00 %;
t1/2: 120s ≈ 2.00 m;

Tantalum radioactive isotope number 21: 169Ta
Neutrons: 96;
Jn: 5/2+;
Decay: ε : 100.00 %;
t1/2: 294s ≈ 4.90 m;

Tantalum radioactive isotope number 22: 170Ta
Neutrons: 97;
Jn: 3+;
Decay: ε : 100.00 %;
t1/2: 405.6s ≈ 6.76 m;

Tantalum radioactive isotope number 23: 171Ta
Neutrons: 98;
Jn: 5/2-;
Decay: ε : 100.00 %;
t1/2: 1398s ≈ 23.30 m;

Tantalum radioactive isotope number 24: 172Ta
Neutrons: 99;
Jn: 3+;
Decay: ε : 100.00 %;
t1/2: 2208s ≈ 36.80 m;

Tantalum radioactive isotope number 25: 173Ta
Neutrons: 100;
Jn: 5/2-;
Decay: ε : 100.00 %;
t1/2: 11304s ≈ 3.14 h;

Tantalum radioactive isotope number 26: 174Ta
Neutrons: 101;
Jn: 3+;
Decay: ε : 100.00 %;
t1/2: 4104s ≈ 1.14 h;

Tantalum radioactive isotope number 27: 175Ta
Neutrons: 102;
Jn: 7/2+;
Decay: ε : 100.00 %;
t1/2: 37800s ≈ 10.50 h;

Tantalum radioactive isotope number 28: 176Ta
Neutrons: 103;
Jn: 1-;
Decay: ε : 100.00 %;
t1/2: 29124s ≈ 8.09 h;

Tantalum radioactive isotope number 29: 176Ta
Neutrons: 103;
Jn: +;
Decay: Unknown;
t1/2: 0.0011s ≈ 1.10 ms;

Tantalum radioactive isotope number 30: 177Ta
Neutrons: 104;
Jn: 7/2+;
Decay: ε : 100.00 %;
t1/2: 203616s ≈ 2.36 d;

Tantalum radioactive isotope number 31: 178Ta
Neutrons: 105;
Jn: 1+;
Decay: ε : 100.00 %;
t1/2: 558.6s ≈ 9.31 m;

Tantalum radioactive isotope number 32: 178Ta
Neutrons: 105;
Jn: 7-;
Decay: ε : 100.00 %;
t1/2: 8496s ≈ 2.36 h;

Tantalum radioactive isotope number 33: 179Ta
Neutrons: 106;
Jn: 7/2+;
Decay: ε : 100.00 %;
t1/2: 57395520s ≈ 1.82 y;

Tantalum radioactive isotope number 34: 180Ta
Neutrons: 107;
Jn: 1+;
Decay: ε : 86.00 %
β - : 14.00 %;
t1/2: 29354.4s ≈ 8.15 h;

Tantalum radioactive isotope number 35: 182Ta
Neutrons: 109;
Jn: 3-;
Decay: β - : 100.00 %;
t1/2: 9886752s ≈ 114.43 d;

Tantalum radioactive isotope number 36: 182Ta
Neutrons: 109;
Jn: 5+;
Decay: IT : 100.00 %;
t1/2: 0.283s ;

Tantalum radioactive isotope number 37: 182Ta
Neutrons: 109;
Jn: 10-;
Decay: IT : 100.00 %;
t1/2: 950.4s ≈ 15.84 m;

Tantalum radioactive isotope number 38: 183Ta
Neutrons: 110;
Jn: 7/2+;
Decay: β - : 100.00 %;
t1/2: 440640s ≈ 5.10 d;

Tantalum radioactive isotope number 39: 184Ta
Neutrons: 111;
Jn: 5-;
Decay: β - : 100.00 %;
t1/2: 31320s ≈ 8.70 h;

Tantalum radioactive isotope number 40: 185Ta
Neutrons: 112;
Jn: 7/2+;
Decay: β - : 100.00 %;
t1/2: 2964s ≈ 49.40 m;

Tantalum radioactive isotope number 41: 185Ta
Neutrons: 112;
Jn: 21/2;
Decay: Unknown;
t1/2: 0.001s ≈ 1.00 ms;

Tantalum radioactive isotope number 42: 186Ta
Neutrons: 113;
Jn: 2-,3-;
Decay: β - : 100.00 %;
t1/2: 630s ≈ 10.50 m;

Tantalum radioactive isotope number 43: 186Ta
Neutrons: 113;
Jn: Unknown;
Decay: β - : 100.00 %;
t1/2: 92.4s ;

Tantalum radioactive isotope number 44: 187Ta
Neutrons: 114;
Jn: Unknown;
Decay: β - ?;
t1/2: 120s ≈ 2.00 m;

Tantalum radioactive isotope number 45: 188Ta
Neutrons: 115;
Jn: Unknown;
Decay: β -;
t1/2: 20s ;

Tantalum radioactive isotope number 46: 189Ta
Neutrons: 116;
Jn: 7/2+;
Decay: β - ?;
t1/2: 3s ;

Tantalum radioactive isotope number 47: 190Ta
Neutrons: 117;
Jn: Unknown;
Decay: β - ?;
t1/2: 0.3s ;

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