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Chemical elements
  Roentgenium
    Isotopes
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Roentgenium Isotopes

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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;