Roentgenium-277

Properties and data of the isotope ²⁷⁷Rg.

Content

General data

Name of the isotope:Roentgenium-277; Rg-277Symbol:²⁷⁷Rg or 277111RgMass number A:277 (= number of nucleons)Atomic number Z:111 (= number of protons)Neutrons N:166Mass defect:279.306954608 u (per nucleus)Nuclear binding energy:260172.75237562 MeV (per nucleus)
939.25181363 MeV (average binding energy per nucleon)Half-life:- unknown -Spin and parity:
(nuclear angular momentum)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 166) and isobaric (same nucleon number A = 277) with Roentgenium-277. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 166	Isobar A = 277
107	²⁷³Bh	²⁷⁷Bh
108	²⁷⁴Hs	²⁷⁷Hs
109	²⁷⁵Mt	²⁷⁷Mt
110	²⁷⁶Ds	²⁷⁷Ds
111	²⁷⁷Rg	²⁷⁷Rg
112	²⁷⁸Cn	²⁷⁷Cn
113	²⁷⁹Nh