Chemical elements
  Arsenic
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    Detection of Arsenic
    Estimation of Arsenic
    Physiological Properties
    PDB 1b92-1ihu
    PDB 1ii0-1tnd
    PDB 1tql-2hmh
    PDB 2hx2-2xnq
    PDB 2xod-3htw
    PDB 3hzf-3od5
    PDB 3ouu-9nse

Arsenic Isotopes






Proton number: 33


Stable Isotopes


Arsenic stable isotope number 1: 75As
Neutrons: 42;
Abundance: 100%;
Jn: 3/2-;

Natural Radioactive isotopes

There is no Arsenic Natural Radioactive isotopes known

Artificial Radioactive isotopes


Arsenic radioactive isotope number 1: 60As
Neutrons: 27;
Jn: Unknown;
Decay: p ?;
t1/2: unknowns ;

Arsenic radioactive isotope number 2: 61As
Neutrons: 28;
Jn: Unknown;
Decay: p ?;
t1/2: unknowns ;

Arsenic radioactive isotope number 3: 62As
Neutrons: 29;
Jn: Unknown;
Decay: p;
t1/2: unknowns ;

Arsenic radioactive isotope number 4: 63As
Neutrons: 30;
Jn: 3/2-;
Decay: p;
t1/2: unknowns ;

Arsenic radioactive isotope number 5: 64As
Neutrons: 31;
Jn: Unknown;
Decay: ε ?;
t1/2: 0.018s ≈ 18.00 ms;

Arsenic radioactive isotope number 6: 65As
Neutrons: 32;
Jn: Unknown;
Decay: ε : 100.00 %;
t1/2: 0.128s ;

Arsenic radioactive isotope number 7: 66As
Neutrons: 33;
Jn: Unknown;
Decay: ε : 100.00 %;
t1/2: 0.09579s ≈ 95.79 ms;

Arsenic radioactive isotope number 8: 67As
Neutrons: 34;
Jn: 5/2-;
Decay: ε : 100.00 %;
t1/2: 42.5s ;

Arsenic radioactive isotope number 9: 68As
Neutrons: 35;
Jn: 3+;
Decay: ε : 100.00 %;
t1/2: 151.6s ≈ 2.53 m;

Arsenic radioactive isotope number 10: 69As
Neutrons: 36;
Jn: 5/2-;
Decay: ε : 100.00 %;
t1/2: 912s ≈ 15.20 m;

Arsenic radioactive isotope number 11: 70As
Neutrons: 37;
Jn: 4+;
Decay: ε : 100.00 %;
t1/2: 3156s ≈ 52.60 m;

Arsenic radioactive isotope number 12: 71As
Neutrons: 38;
Jn: 5/2-;
Decay: ε : 100.00 %;
t1/2: 235008s ≈ 2.72 d;

Arsenic radioactive isotope number 13: 72As
Neutrons: 39;
Jn: 2-;
Decay: ε : 100.00 %;
t1/2: 93600s ≈ 26.00 h;

Arsenic radioactive isotope number 14: 73As
Neutrons: 40;
Jn: 3/2-;
Decay: ε : 100.00 %;
t1/2: 6937920s ≈ 80.30 d;

Arsenic radioactive isotope number 15: 74As
Neutrons: 41;
Jn: 2-;
Decay: ε : 66.00 %
β - : 34.00 %;
t1/2: 1535328s ≈ 17.77 d;

Arsenic radioactive isotope number 16: 76As
Neutrons: 43;
Jn: 2-;
Decay: β - : 100.00 %;
t1/2: 94538.88s ≈ 26.26 h;

Arsenic radioactive isotope number 17: 77As
Neutrons: 44;
Jn: 3/2-;
Decay: β - : 100.00 %;
t1/2: 139788s ≈ 38.83 h;

Arsenic radioactive isotope number 18: 78As
Neutrons: 45;
Jn: 2-;
Decay: β - : 100.00 %;
t1/2: 5442s ≈ 1.51 h;

Arsenic radioactive isotope number 19: 79As
Neutrons: 46;
Jn: 3/2-;
Decay: β - : 100.00 %;
t1/2: 540.6s ≈ 9.01 m;

Arsenic radioactive isotope number 20: 80As
Neutrons: 47;
Jn: 1+;
Decay: β - : 100.00 %;
t1/2: 15.2s ;

Arsenic radioactive isotope number 21: 81As
Neutrons: 48;
Jn: 3/2-;
Decay: β - : 100.00 %;
t1/2: 33.3s ;

Arsenic radioactive isotope number 22: 82As
Neutrons: 49;
Jn: 1+;
Decay: β - : 100.00 %;
t1/2: 19.1s ;

Arsenic radioactive isotope number 23: 82As
Neutrons: 49;
Jn: 5-;
Decay: β - : 100.00 %;
t1/2: 13.6s ;

Arsenic radioactive isotope number 24: 83As
Neutrons: 50;
Jn: 5/2-,3/2-;
Decay: β - : 100.00 %;
t1/2: 13.4s ;

Arsenic radioactive isotope number 25: 84As
Neutrons: 51;
Jn: 3-;
Decay: β - : 100.00 %
β -n : 0.28 %;
t1/2: 3.24s ;

Arsenic radioactive isotope number 26: 85As
Neutrons: 52;
Jn: 3/2-;
Decay: β - : 100.00 %
β -n : 59.40 %;
t1/2: 2.021s ;

Arsenic radioactive isotope number 27: 86As
Neutrons: 53;
Jn: Unknown;
Decay: β - : 100.00 %
β -n : 33.00 %;
t1/2: 0.945s ;

Arsenic radioactive isotope number 28: 87As
Neutrons: 54;
Jn: 3/2-;
Decay: β - : 100.00 %
β -n : 15.40 %;
t1/2: 0.56s ;

Arsenic radioactive isotope number 29: 88As
Neutrons: 55;
Jn: Unknown;
Decay: β - : 100.00 %;
t1/2: 3E-07s ≈ 0.30 µs;

Arsenic radioactive isotope number 30: 89As
Neutrons: 56;
Jn: Unknown;
Decay: β - ?;
t1/2: 3E-07s ≈ 0.30 µs;

Arsenic radioactive isotope number 31: 90As
Neutrons: 57;
Jn: Unknown;
Decay: β - ?;
t1/2: 1.5E-07s ≈ 0.15 µs;

Arsenic radioactive isotope number 32: 91As
Neutrons: 58;
Jn: Unknown;
Decay: β -;
t1/2: 1.5E-07s ≈ 0.15 µs;

Arsenic radioactive isotope number 33: 92As
Neutrons: 59;
Jn: Unknown;
Decay: β - : 100.00 %;
t1/2: 3E-07s ≈ 0.30 µs;
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