Named after Wilhelm R\u00f6ntgen, X-ray discoverer.
Roentgenium is a unknown element located in period 7, group 11 of the periodic table. It has the chemical symbol Rg and atomic number 111. The electron configuration of Roentgenium is [Rn] 5f14 6d10 7s1, giving it 1 valence electron(s).
Explore Roentgenium in interactive 3D with the Soren Periodic Table. View Bohr model, quantum orbital model, nucleus inspector, and phase lab with temperature and pressure controls. Includes fun facts, real-world uses, and NCTB curriculum integration for Bangladeshi students.