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Thallium Isotopes

Proton number: 81

Stable Isotopes


Thallium stable isotope number 1: 203Tl
Neutrons: 122;
Abundance: 29.524%;
Jn: 1/2+;

Thallium stable isotope number 2: 205Tl
Neutrons: 124;
Abundance: 70.476%;
Jn: 1/2+;

Natural Radioactive isotopes

There is no Thallium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Thallium radioactive isotope number 1: 176Tl
Neutrons: 95;
Jn: 3-,4-,5-;
Decay: p ~ 100.00 %;
t1/2: 0.0052s ≈ 5.20 ms;

Thallium radioactive isotope number 2: 177Tl
Neutrons: 96;
Jn: 1/2+;
Decay: α : 73.00 %
p : 27.00 %;
t1/2: 0.018s ≈ 18.00 ms;

Thallium radioactive isotope number 3: 178Tl
Neutrons: 97;
Jn: Unknown;
Decay: α ?
ε ?;
t1/2: 0.06s ≈ 60.00 ms;

Thallium radioactive isotope number 4: 179Tl
Neutrons: 98;
Jn: 1/2+;
Decay: α < 100.00 %
ε;
t1/2: 0.42s ;

Thallium radioactive isotope number 5: 179Tl
Neutrons: 98;
Jn: 11/2-;
Decay: α ≤ 100.00 %
ε
IT;
t1/2: 0.0017s ≈ 1.70 ms;

Thallium radioactive isotope number 6: 180Tl
Neutrons: 99;
Jn: Unknown;
Decay: α : 7.00 %
ε F ~ 1.0E-4 %
ε;
t1/2: 1.5s ;

Thallium radioactive isotope number 7: 181Tl
Neutrons: 100;
Jn: 1/2+;
Decay: α ≤ 10.00 %;
t1/2: 0.0014s ≈ 1.40 ms;

Thallium radioactive isotope number 8: 181Tl
Neutrons: 100;
Jn: 9/2-;
Decay: Unknown;
t1/2: 3.2s ;

Thallium radioactive isotope number 9: 182Tl
Neutrons: 101;
Jn: 7+;
Decay: ε > 96.00 %
α < 4.00 %;
t1/2: 3.1s ;

Thallium radioactive isotope number 10: 183Tl
Neutrons: 102;
Jn: 1/2+;
Decay: ε > 0.00 %
α;
t1/2: 6.9s ;

Thallium radioactive isotope number 11: 183Tl
Neutrons: 102;
Jn: 9/2-;
Decay: α : 2.00 %
IT
ε;
t1/2: 0.0533s ≈ 53.30 ms;

Thallium radioactive isotope number 12: 184Tl
Neutrons: 103;
Jn: 2+;
Decay: ε : 97.90 %
α : 2.10 %;
t1/2: 11s ;

Thallium radioactive isotope number 13: 185Tl
Neutrons: 104;
Jn: 1/2+;
Decay: ε;
t1/2: 19.5s ;

Thallium radioactive isotope number 14: 185Tl
Neutrons: 104;
Jn: 9/2-;
Decay: IT
α;
t1/2: 1.93s ;

Thallium radioactive isotope number 15: 186Tl
Neutrons: 105;
Jn: 7+;
Decay: ε : 100.00 %
α ~ 6.0E-3 %;
t1/2: 27.5s ;

Thallium radioactive isotope number 16: 186Tl
Neutrons: 105;
Jn: 10-;
Decay: IT : 100.00 %;
t1/2: 2.9s ;

Thallium radioactive isotope number 17: 187Tl
Neutrons: 106;
Jn: 1/2+;
Decay: ε < 100.00 %
α > 0.00 %;
t1/2: 51s ;

Thallium radioactive isotope number 18: 187Tl
Neutrons: 106;
Jn: 9/2-;
Decay: IT < 99.90 %
ε < 99.90 %
α : 0.15 %;
t1/2: 15.6s ;

Thallium radioactive isotope number 19: 188Tl
Neutrons: 107;
Jn: 7+;
Decay: ε : 100.00 %;
t1/2: 71s ;

Thallium radioactive isotope number 20: 188Tl
Neutrons: 107;
Jn: 2-;
Decay: ε : 100.00 %;
t1/2: 71s ;

Thallium radioactive isotope number 21: 189Tl
Neutrons: 108;
Jn: 1/2+;
Decay: ε : 100.00 %;
t1/2: 138s ≈ 2.30 m;

Thallium radioactive isotope number 22: 189Tl
Neutrons: 108;
Jn: 9/2-;
Decay: ε < 100.00 %
IT < 4.00 %;
t1/2: 84s ;

Thallium radioactive isotope number 23: 190Tl
Neutrons: 109;
Jn: 2-;
Decay: ε : 100.00 %;
t1/2: 156s ≈ 2.60 m;

Thallium radioactive isotope number 24: 190Tl
Neutrons: 109;
Jn: 7+;
Decay: ε : 100.00 %;
t1/2: 222s ≈ 3.70 m;

Thallium radioactive isotope number 25: 191Tl
Neutrons: 110;
Jn: 1/2+;
Decay: ε ?;
t1/2: unknowns ;

Thallium radioactive isotope number 26: 191Tl
Neutrons: 110;
Jn: 9/2-;
Decay: ε : 100.00 %;
t1/2: 313.2s ≈ 5.22 m;

Thallium radioactive isotope number 27: 192Tl
Neutrons: 111;
Jn: 2-;
Decay: ε : 100.00 %;
t1/2: 576s ≈ 9.60 m;

Thallium radioactive isotope number 28: 192Tl
Neutrons: 111;
Jn: 7+;
Decay: ε : 100.00 %;
t1/2: 648s ≈ 10.80 m;

Thallium radioactive isotope number 29: 193Tl
Neutrons: 112;
Jn: 1/2+;
Decay: ε : 100.00 %;
t1/2: 1296s ≈ 21.60 m;

Thallium radioactive isotope number 30: 193Tl
Neutrons: 112;
Jn: 9/2-;
Decay: IT ≤ 75.00 %
ε ≥ 25.00 %;
t1/2: 126.6s ≈ 2.11 m;

Thallium radioactive isotope number 31: 194Tl
Neutrons: 113;
Jn: 2-;
Decay: ε : 100.00 %
α < 1.0E-7 %;
t1/2: 1980s ≈ 33.00 m;

Thallium radioactive isotope number 32: 194Tl
Neutrons: 113;
Jn: 7+;
Decay: ε : 100.00 %;
t1/2: 1968s ≈ 32.80 m;

Thallium radioactive isotope number 33: 195Tl
Neutrons: 114;
Jn: 1/2+;
Decay: ε : 100.00 %;
t1/2: 4176s ≈ 1.16 h;

Thallium radioactive isotope number 34: 195Tl
Neutrons: 114;
Jn: 9/2-;
Decay: IT : 100.00 %;
t1/2: 3.6s ;

Thallium radioactive isotope number 35: 196Tl
Neutrons: 115;
Jn: 2-;
Decay: ε : 100.00 %;
t1/2: 6624s ≈ 1.84 h;

Thallium radioactive isotope number 36: 196Tl
Neutrons: 115;
Jn: 7+;
Decay: ε : 95.50 %
IT : 4.50 %;
t1/2: 5076s ≈ 1.41 h;

Thallium radioactive isotope number 37: 197Tl
Neutrons: 116;
Jn: 1/2+;
Decay: ε : 100.00 %;
t1/2: 10224s ≈ 2.84 h;

Thallium radioactive isotope number 38: 197Tl
Neutrons: 116;
Jn: 9/2-;
Decay: IT : 100.00 %;
t1/2: 0.54s ;

Thallium radioactive isotope number 39: 198Tl
Neutrons: 117;
Jn: 2-;
Decay: ε : 100.00 %;
t1/2: 19080s ≈ 5.30 h;

Thallium radioactive isotope number 40: 198Tl
Neutrons: 117;
Jn: 7+;
Decay: ε : 54.00 %
IT : 46.00 %;
t1/2: 6732s ≈ 1.87 h;

Thallium radioactive isotope number 41: 199Tl
Neutrons: 118;
Jn: 1/2+;
Decay: ε : 100.00 %;
t1/2: 26712s ≈ 7.42 h;

Thallium radioactive isotope number 42: 199Tl
Neutrons: 118;
Jn: 9/2-;
Decay: IT : 100.00 %;
t1/2: 0.0284s ≈ 28.40 ms;

Thallium radioactive isotope number 43: 200Tl
Neutrons: 119;
Jn: 2-;
Decay: ε : 100.00 %;
t1/2: 93960s ≈ 26.10 h;

Thallium radioactive isotope number 44: 201Tl
Neutrons: 120;
Jn: 1/2+;
Decay: ε : 100.00 %;
t1/2: 262837.4s ≈ 3.04 d;

Thallium radioactive isotope number 45: 201Tl
Neutrons: 120;
Jn: 9/2-;
Decay: IT : 100.00 %;
t1/2: 0.00201s ≈ 2.01 ms;

Thallium radioactive isotope number 46: 202Tl
Neutrons: 121;
Jn: 2-;
Decay: ε : 100.00 %;
t1/2: 1056672s ≈ 12.23 d;

Thallium radioactive isotope number 47: 204Tl
Neutrons: 123;
Jn: 2-;
Decay: β - : 97.10 %
ε : 2.90 %;
t1/2: 119206100s ≈ 3.78 y;

Thallium radioactive isotope number 48: 206Tl
Neutrons: 125;
Jn: 0-;
Decay: β - : 100.00 %;
t1/2: 252s ≈ 4.20 m;

Thallium radioactive isotope number 49: 206Tl
Neutrons: 125;
Jn: 12-;
Decay: IT : 100.00 %;
t1/2: 224.4s ≈ 3.74 m;

Thallium radioactive isotope number 50: 207Tl
Neutrons: 126;
Jn: 1/2+;
Decay: β - : 100.00 %;
t1/2: 286.2s ≈ 4.77 m;

Thallium radioactive isotope number 51: 207Tl
Neutrons: 126;
Jn: 11/2-;
Decay: IT : 100.00 %;
t1/2: 1.33s ;

Thallium radioactive isotope number 52: 208Tl
Neutrons: 127;
Jn: 5+;
Decay: β - : 100.00 %;
t1/2: 183.18s ≈ 3.05 m;

Thallium radioactive isotope number 53: 209Tl
Neutrons: 128;
Jn: 1/2+;
Decay: β - : 100.00 %;
t1/2: 129.66s ≈ 2.16 m;

Thallium radioactive isotope number 54: 210Tl
Neutrons: 129;
Jn: 5+;
Decay: β - : 100.00 %
β -n : 7.0E-3 %;
t1/2: 78s ;

Thallium radioactive isotope number 55: 211Tl
Neutrons: 130;
Jn: Unknown;
Decay: β - ?;
t1/2: 3E-07s ≈ 0.30 µs;

Thallium radioactive isotope number 56: 212Tl
Neutrons: 131;
Jn: Unknown;
Decay: β - ?;
t1/2: 3E-07s ≈ 0.30 µs;

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