Named after Dubna, Russia.
Dubnium is a transition element located in period 7, group 5 of the periodic table. It has the chemical symbol Db and atomic number 105. The electron configuration of Dubnium is [Rn] 5f14 6d3 7s2, giving it 7 valence electron(s).
Explore Dubnium 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.