Dubnio
105
Db
Grupo
5
Perio
7
Bloko
d
Protonoj
Elektronoj
Neŭtronoj
105
105
157
Ĝeneralaj Propraĵoj
Atoma Nombro
105
Atommaso
[268]
Amasa Nombro
262
Kategorio
Transirmetaloj
Koloro
Neniu
Radioaktiva
Jes
Named after the Russian town of Dubna
Kristala Strukturo
Neniu
Historio
Dubnium was reportedly first discovered in 1968 at the Joint Institute for Nuclear Research at Dubna.
Researchers there bombarded an americium-243 target with neon-22 ions.
In the same year, a team led by Albert Ghiorso working at the University of California, Berkeley conclusively synthesized the element by bombarding a californium-249 target with nitrogen-15 ions.
Researchers there bombarded an americium-243 target with neon-22 ions.
In the same year, a team led by Albert Ghiorso working at the University of California, Berkeley conclusively synthesized the element by bombarding a californium-249 target with nitrogen-15 ions.
Elektronoj per ŝelo
2, 8, 18, 32, 32, 11, 2
Elektrona Agordo
[Rn] 5f14 6d3 7s2
The Berkeley team proposed the name hahnium for the element
Fizikaj Propraĵoj
Fazo
Solido
Denso
39 g/cm3
Fandpunkto
-
Bolpunkto
-
Varmo de Fuzio
Neniu
Varmo de Vaporiĝo
Neniu
Specifa Varmo Kapacito
-
Krusta Abundo
Neniu
Universa Abundo
Neniu
Bildaj kreditoj: Wikimedia Commons (Hrustov)
The element is named after after the Russian town of Dubna, the location of the Joint Institute for Nuclear Research
CAS Nombro
53850-35-4
PubChem Kunmetita Identiga Nombro
Neniu
Atomaj Propraĵoj
Atoma Radiuso
-
Kovalenta Radiuso
149 pm
Elektronegativeco
-
Potencialo de jonigo
-
Atoma Volumo
-
Termika Kondukto
0,58 W/cm·K
Oksidaj Ŝtatoj
5
Aplikoj
Dubnium is used for scientific research purposes only.
Dubnium is harmful due to its radioactivity
Izotopoj
Stabilaj Izotopoj
-Malstabilaj Isotopoj
255Db, 256Db, 257Db, 258Db, 259Db, 260Db, 261Db, 262Db, 263Db, 264Db, 265Db, 266Db, 267Db, 268Db, 269Db, 270Db