Chemical elements
  Roentgenium
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Roentgenium Isotopes






Proton number: 111


Stable Isotopes

There is no Roentgenium Stable isotopes known

Natural Radioactive isotopes

There is no Roentgenium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Roentgenium radioactive isotope number 1: 272Rg
Neutrons: 161;
Jn: Unknown;
Decay: α ~ 100.00 %;
t1/2: 0.0038s ≈ 3.80 ms;

Roentgenium radioactive isotope number 2: 273Rg
Neutrons: 162;
Jn: Unknown;
Decay: α ?;
t1/2: 0.005s ≈ 5.00 ms;

Roentgenium radioactive isotope number 3: 274Rg
Neutrons: 163;
Jn: Unknown;
Decay: α ~ 100.00 %;
t1/2: 0.0064s ≈ 6.40 ms;

Roentgenium radioactive isotope number 4: 275Rg
Neutrons: 164;
Jn: Unknown;
Decay: α ?;
t1/2: 0.01s ≈ 10.00 ms;

Roentgenium radioactive isotope number 5: 276Rg
Neutrons: 165;
Jn: Unknown;
Decay: SF ?
α ?;
t1/2: 0.1s ;

Roentgenium radioactive isotope number 6: 277Rg
Neutrons: 166;
Jn: Unknown;
Decay: SF ?
α ?;
t1/2: 1s ;

Roentgenium radioactive isotope number 7: 278Rg
Neutrons: 167;
Jn: Unknown;
Decay: α ?
SF ?;
t1/2: 1s ;

Roentgenium radioactive isotope number 8: 279Rg
Neutrons: 168;
Jn: Unknown;
Decay: α ~ 100.00 %;
t1/2: 0.17s ;

Roentgenium radioactive isotope number 9: 280Rg
Neutrons: 169;
Jn: Unknown;
Decay: α ~ 100.00 %;
t1/2: 3.6s ;

Roentgenium radioactive isotope number 10: 281Rg
Neutrons: 170;
Jn: Unknown;
Decay: α ?
SF ?;
t1/2: 60s ;

Roentgenium radioactive isotope number 11: 282Rg
Neutrons: 171;
Jn: Unknown;
Decay: α ?
SF ?;
t1/2: 240s ≈ 4.00 m;

Roentgenium radioactive isotope number 12: 283Rg
Neutrons: 172;
Jn: Unknown;
Decay: α ?
SF ?;
t1/2: 600s ≈ 10.00 m;
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