Dubnium (Db): Properties, Uses and Facts in 3D
Dubnium is element 105 on the periodic table, a transition metal. At room temperature it is expected to be a solid (too few atoms have ever been made to check). Open it in the 3D Periodic Table to spin its tile, see its electron shells and read its story.
Explore in 3DDubnium quick facts
| Atomic number | 105 |
|---|---|
| Symbol | Db |
| Atomic mass | 268 |
| Category | Transition Metal |
| Group and period | Group 5, period 7 |
| Block | d-block |
| State at room temperature | Solid (expected) |
| Electron configuration | [Rn] 5f¹⁴ 6d³ 7s² |
| Electrons per shell | 2, 8, 18, 32, 32, 11, 2 |
| Discovered | 1968, Flerov |
What is dubnium used for?
- Scientific research only
- No practical applications
- Nuclear physics
Interesting facts about dubnium
- Named after Dubna, Russia. Location of the Joint Institute for Nuclear Research
- Also disputed between USSR and US. The Americans called it hahnium for many years
- Half-life of the most stable isotope: about 16 hours (Db-268)
Dubnium was discovered in 1968 by Flerov in SU.
Where dubnium sits on the periodic table
Dubnium is in group 5, period 7. Tap any element to open its page.
Other transition metals
Dubnium questions
What is the atomic number of dubnium?
Dubnium has atomic number 105, so every dubnium atom has 105 protons in its nucleus. Its symbol is Db and its atomic mass is 268.
Is dubnium a metal?
Dubnium is a metal. On the periodic table it is grouped as a transition metal, found in group 5, period 7.
What is the electron configuration of dubnium?
The electron configuration of dubnium is [Rn] 5f¹⁴ 6d³ 7s². Its electrons sit in 7 shells: 2, 8, 18, 32, 32, 11, 2.
What is dubnium used for?
Dubnium is used for scientific research only, no practical applications and nuclear physics.
Who discovered dubnium?
Dubnium was discovered in 1968 by Flerov in SU.
The 3D Periodic Table is made by Julian Neagu, a solo founder in London, as part of VisionVix Simulators. It is free to use in the browser on desktop and phone, with no sign-up.