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Nobelium Isotopes






Proton number: 102


Stable Isotopes


Nobelium stable isotope number 1: 249No
Neutrons: 147;
Abundance: None%;
Jn: ;

Natural Radioactive isotopes

There is no Nobelium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Nobelium radioactive isotope number 1: 248No
Neutrons: 146;
Jn: 0+;
Decay: SF ?;
t1/2: 2E-06s ≈ 2.00 µs;

Nobelium radioactive isotope number 2: 250No
Neutrons: 148;
Jn: 0+;
Decay: SF ~ 100.00 %
α < 2.00 %;
t1/2: 4.2E-06s ≈ 4.20 µs;

Nobelium radioactive isotope number 3: 250No
Neutrons: 148;
Jn: 6+;
Decay: SF ~ 100.00 %;
t1/2: 4.6E-05s ≈ 46.00 µs;

Nobelium radioactive isotope number 4: 251No
Neutrons: 149;
Jn: 7/2+;
Decay: α : 84.00 %
SF < 0.30 %
ε;
t1/2: 0.8s ;

Nobelium radioactive isotope number 5: 251No
Neutrons: 149;
Jn: 1/2+;
Decay: α ~ 100.00 %;
t1/2: 1.02s ;

Nobelium radioactive isotope number 6: 252No
Neutrons: 150;
Jn: 0+;
Decay: α > 66.70 %
SF : 32.20 %
ε < 1.10 %;
t1/2: 2.44s ;

Nobelium radioactive isotope number 7: 253No
Neutrons: 151;
Jn: 9/2-;
Decay: α ≤ 100.00 %
ε;
t1/2: 97.2s ;

Nobelium radioactive isotope number 8: 254No
Neutrons: 152;
Jn: 0+;
Decay: α : 90.00 %
ε : 10.00 %
SF : 0.17 %;
t1/2: 51s ;

Nobelium radioactive isotope number 9: 254No
Neutrons: 152;
Jn: 0+;
Decay: IT > 80.00 %;
t1/2: 0.28s ;

Nobelium radioactive isotope number 10: 255No
Neutrons: 153;
Jn: 1/2+;
Decay: α : 61.00 %
ε : 39.00 %;
t1/2: 186s ≈ 3.10 m;

Nobelium radioactive isotope number 11: 256No
Neutrons: 154;
Jn: 0+;
Decay: α : 99.47 %
SF : 0.53 %;
t1/2: 2.91s ;

Nobelium radioactive isotope number 12: 257No
Neutrons: 155;
Jn: 7/2+;
Decay: α ≤ 100.00 %
SF ≤ 1.50 %;
t1/2: 25s ;

Nobelium radioactive isotope number 13: 258No
Neutrons: 156;
Jn: 0+;
Decay: SF ≤ 100.00 %;
t1/2: 0.0012s ≈ 1.20 ms;

Nobelium radioactive isotope number 14: 259No
Neutrons: 157;
Jn: Unknown;
Decay: α : 75.00 %
ε : 25.00 %
SF < 10.00 %;
t1/2: 3480s ≈ 58.00 m;

Nobelium radioactive isotope number 15: 260No
Neutrons: 158;
Jn: 0+;
Decay: SF : 100.00 %;
t1/2: 0.106s ;

Nobelium radioactive isotope number 16: 261No
Neutrons: 159;
Jn: Unknown;
Decay: α
β -;
t1/2: unknowns ;

Nobelium radioactive isotope number 17: 262No
Neutrons: 160;
Jn: 0+;
Decay: SF : 100.00 %;
t1/2: 0.005s ≈ 5.00 ms;

Nobelium radioactive isotope number 18: 263No
Neutrons: 161;
Jn: Unknown;
Decay: SF ?
α ?;
t1/2: 1200s ≈ 20.00 m;

Nobelium radioactive isotope number 19: 264No
Neutrons: 162;
Jn: 0+;
Decay: α ?;
t1/2: 60s ;
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