Dubnium (Db) — Element 105: Properties & Data | Aladdin Scientific
Dubnium(Db) — Element 105
Dubnium (Db) is a transition metal with atomic number 105 and atomic mass 268.126. It sits in group 5 and period 7 of the periodic table and was discovered in 1967.
Key facts
| Atomic mass | 268.1260 u |
|---|---|
| Electron configuration | [Rn]7s2 5f14 6d3 |
| Oxidation states | 5, 4, 3 |
| Standard state | Solid |
| Year discovered | 1967 |
Frequently asked questions
What is the electron configuration of dubnium?
The ground-state electron configuration of dubnium is [Rn]7s2 5f14 6d3.
What group and period is dubnium in?
Dubnium (Db) is in group 5 and period 7 of the periodic table, classified as a transition metal.
What is the standard state of dubnium?
Dubnium is a solid at standard temperature and pressure.
When was dubnium discovered?
Dubnium was discovered in 1967.
Related elements
About this data: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .