105Db
Element 105
Dubnium
Transition metals
Dubnium is a chemical element with symbol Db and atomic number 105.
Key data
- Atomic number
- 105
- Atomic mass
- 268.000 u
- Group / Period
- 5 / 7
- Block
- d-block
- Phase at STP
- Solid
- Density
- 29.3 g/cm³
- Melting point
- —
- Boiling point
- —
- Electron configuration
- *[Rn] 5f14 6d3 7s2
Common uses
- •Research only
- •Named after Dubna
- •Few atoms ever made
Discovery
Year: 1967
Discovered by: Joint Institute for Nuclear Research
Frequently asked questions
What is the atomic number of Dubnium?
Dubnium has atomic number 105. Its symbol is Db and its atomic mass is 268 u.
What category of element is Dubnium?
Dubnium is classified as transition metals. It sits in group 5, period 7 of the periodic table.
What is Dubnium used for?
Common uses of Dubnium include: Research only, Named after Dubna, Few atoms ever made.
When was Dubnium discovered?
Dubnium was discovered in 1967 by Joint Institute for Nuclear Research.
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