Atomic and nuclear properties of materials:
Roentgenium (Rg)
Atomic number 111 n
Atomic mass (272.1536) g mole-1
Density (20° C, 1 atm): Unknown g cm-3
Radiation length Pending g cm-2
Nuclear collision length Pending g cm-2
Nuclear interaction length Pending g cm-2
Critical energy (e-) Pending MeV
Molière radius Pending g cm-2
Muon critical energy Pending GeV
Explanation of some entries
As of 2004, element 111 is officially named Roentgenium
(Pure Appl. Chem. 76(12), 2101-2103, 2004).
Table of isotopes