Dubnium (Db)
"The Cold Warrior, a hero born from the scientific competition between the US and the Soviet Union."
A memorable persona to anchor Db in your mind.
29.3
Grams per cm³
N/A
Celsius (°C)
N/A
Radius (pm)
Daily Life Link
Dubnium has no everyday connection, used only in research.
Discovery & History
Year Discovered
1968
Discovered By
Joint Institute for Nuclear Research (JINR)
Origin of Name
"Dubnium is named for the Russian town Dubna."
Technical Properties
Atomic Mass
[268] u
Standard State
solid
Boiling Point
N/A
Electron Configuration
[Rn] 5f146d37s2
1st Ionization Energy
N/A
Electron Affinity
N/A
Oxidation States
"Dubnium is a synthetic, highly radioactive metal."
Did You Know?
It is named after the town of Dubna in Russia, the location of the Joint Institute for Nuclear Research (JINR), where the element was first synthesized.
Like its neighbors, its discovery was a subject of dispute between the Russian lab at Dubna and the American lab at Berkeley.
The International Union of Pure and Applied Chemistry (IUPAC) eventually gave credit for the discovery to both teams and officially named it Dubnium in 1997.
Its most stable isotope has a half-life of just over a day.