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Erbium Isotopes






Proton number: 68


Stable Isotopes


Erbium stable isotope number 1: 162Er
Neutrons: 94;
Abundance: 0.139%;
Jn: 0+;

Erbium stable isotope number 2: 164Er
Neutrons: 96;
Abundance: 1.601%;
Jn: 0+;

Erbium stable isotope number 3: 166Er
Neutrons: 98;
Abundance: 33.503%;
Jn: 0+;

Erbium stable isotope number 4: 167Er
Neutrons: 99;
Abundance: 22.869%;
Jn: 7/2+;

Erbium stable isotope number 5: 168Er
Neutrons: 100;
Abundance: 26.978%;
Jn: 0+;

Erbium stable isotope number 6: 170Er
Neutrons: 102;
Abundance: 14.91%;
Jn: 0+;

Natural Radioactive isotopes

There is no Erbium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Erbium radioactive isotope number 1: 143Er
Neutrons: 75;
Jn: Unknown;
Decay: ε ?;
t1/2: 0.2s ;

Erbium radioactive isotope number 2: 144Er
Neutrons: 76;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 2E-07s ≈ 0.20 µs;

Erbium radioactive isotope number 3: 145Er
Neutrons: 77;
Jn: 11/2-;
Decay: ε : 100.00 %
ε p;
t1/2: 0.9s ;

Erbium radioactive isotope number 4: 146Er
Neutrons: 78;
Jn: 0+;
Decay: ε p : 100.00 %
ε : 100.00 %;
t1/2: 1.7s ;

Erbium radioactive isotope number 5: 147Er
Neutrons: 79;
Jn: 11/2-;
Decay: ε : 100.00 %
ε p > 0.00 %;
t1/2: 2.5s ;

Erbium radioactive isotope number 6: 147Er
Neutrons: 79;
Jn: 1/2+;
Decay: ε : 100.00 %
ε p > 0.00 %;
t1/2: 2.5s ;

Erbium radioactive isotope number 7: 148Er
Neutrons: 80;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 4.6s ;

Erbium radioactive isotope number 8: 149Er
Neutrons: 81;
Jn: 1/2+;
Decay: ε : 100.00 %
ε p : 7.00 %;
t1/2: 4s ;

Erbium radioactive isotope number 9: 149Er
Neutrons: 81;
Jn: 11/2-;
Decay: ε : 96.50 %
IT : 3.50 %
ε p : 0.18 %;
t1/2: 8.9s ;

Erbium radioactive isotope number 10: 150Er
Neutrons: 82;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 18.5s ;

Erbium radioactive isotope number 11: 151Er
Neutrons: 83;
Jn: 7/2-;
Decay: ε : 100.00 %;
t1/2: 23.5s ;

Erbium radioactive isotope number 12: 151Er
Neutrons: 83;
Jn: 27/2-;
Decay: IT : 95.30 %
ε : 4.70 %;
t1/2: 0.58s ;

Erbium radioactive isotope number 13: 152Er
Neutrons: 84;
Jn: 0+;
Decay: α : 90.00 %
ε : 10.00 %;
t1/2: 10.3s ;

Erbium radioactive isotope number 14: 153Er
Neutrons: 85;
Jn: 7/2-;
Decay: α : 53.00 %
ε : 47.00 %;
t1/2: 37.1s ;

Erbium radioactive isotope number 15: 154Er
Neutrons: 86;
Jn: 0+;
Decay: ε : 99.53 %
α : 0.47 %;
t1/2: 223.8s ≈ 3.73 m;

Erbium radioactive isotope number 16: 155Er
Neutrons: 87;
Jn: 7/2-;
Decay: ε : 99.98 %
α : 0.02 %;
t1/2: 318s ≈ 5.30 m;

Erbium radioactive isotope number 17: 156Er
Neutrons: 88;
Jn: 0+;
Decay: ε ~ 100.00 %
α : 1.7E-5 %;
t1/2: 1170s ≈ 19.50 m;

Erbium radioactive isotope number 18: 157Er
Neutrons: 89;
Jn: 3/2-;
Decay: ε ~ 100.00 %;
t1/2: 1119s ≈ 18.65 m;

Erbium radioactive isotope number 19: 158Er
Neutrons: 90;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 8244s ≈ 2.29 h;

Erbium radioactive isotope number 20: 159Er
Neutrons: 91;
Jn: 3/2-;
Decay: ε : 100.00 %;
t1/2: 2160s ≈ 36.00 m;

Erbium radioactive isotope number 21: 160Er
Neutrons: 92;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 102888s ≈ 28.58 h;

Erbium radioactive isotope number 22: 161Er
Neutrons: 93;
Jn: 3/2-;
Decay: ε : 100.00 %;
t1/2: 11556s ≈ 3.21 h;

Erbium radioactive isotope number 23: 163Er
Neutrons: 95;
Jn: 5/2-;
Decay: ε : 100.00 %;
t1/2: 4500s ≈ 1.25 h;

Erbium radioactive isotope number 24: 165Er
Neutrons: 97;
Jn: 5/2-;
Decay: ε : 100.00 %;
t1/2: 37296s ≈ 10.36 h;

Erbium radioactive isotope number 25: 167Er
Neutrons: 99;
Jn: 1/2-;
Decay: IT : 100.00 %;
t1/2: 2.269s ;

Erbium radioactive isotope number 26: 169Er
Neutrons: 101;
Jn: 1/2-;
Decay: β - : 100.00 %;
t1/2: 811468.8s ≈ 9.39 d;

Erbium radioactive isotope number 27: 171Er
Neutrons: 103;
Jn: 5/2-;
Decay: β - : 100.00 %;
t1/2: 27057.6s ≈ 7.52 h;

Erbium radioactive isotope number 28: 172Er
Neutrons: 104;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 177480s ≈ 2.05 d;

Erbium radioactive isotope number 29: 173Er
Neutrons: 105;
Jn: 7/2-;
Decay: β - : 100.00 %;
t1/2: 84s ;

Erbium radioactive isotope number 30: 174Er
Neutrons: 106;
Jn: 0+;
Decay: β - : 100.00 %;
t1/2: 192s ≈ 3.20 m;

Erbium radioactive isotope number 31: 175Er
Neutrons: 107;
Jn: 9/2+;
Decay: β - : 100.00 %;
t1/2: 72s ;

Erbium radioactive isotope number 32: 176Er
Neutrons: 108;
Jn: 0+;
Decay: β - ?;
t1/2: 20s ;

Erbium radioactive isotope number 33: 177Er
Neutrons: 109;
Jn: Unknown;
Decay: β - ?;
t1/2: 3s ;
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