Berkelio
97
Bk
Grupo
Neniu
Perio
7
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
97
97
150
Ĝeneralaj Propraĵoj
Atoma Nombro
97
Atommaso
[247]
Amasa Nombro
247
Kategorio
Aktinoidoj
Koloro
Neniu
Radioaktiva
Jes
Named after Berkeley, California, the city of its discovery
Kristala Strukturo
Simpla Sesangula
Historio
Berkelium was discovered by Glenn T. Seaborg, Albert Ghiorso and Stanley G. Thompson in 1949 at the University of California, Berkeley.
It was produced by the bombardment of americium with alpha particles.
Berkelium was isolated in greater quantities for the first time by Burris Cunningham and Stanley Thompson in 1958.
It was produced by the bombardment of americium with alpha particles.
Berkelium was isolated in greater quantities for the first time by Burris Cunningham and Stanley Thompson in 1958.
Elektronoj per ŝelo
2, 8, 18, 32, 27, 8, 2
Elektrona Agordo
[Rn] 5f9 7s2
Just over one gram of berkelium has been produced in the United States since 1967
Fizikaj Propraĵoj
Fazo
Solido
Denso
14,78 g/cm3
Fandpunkto
1259,15 K | 986 °C | 1806,8 °F
Bolpunkto
3173,15 K | 2900 °C | 5252 °F
Varmo de Fuzio
Neniu
Varmo de Vaporiĝo
Neniu
Specifa Varmo Kapacito
-
Krusta Abundo
Neniu
Universa Abundo
Neniu
Bildaj kreditoj: Wikimedia Commons (Department of Energy - Office of Public Affairs)
The 60-inch cyclotron at the Lawrence Radiation Laboratory, University of California, Berkeley
CAS Nombro
7440-40-6
PubChem Kunmetita Identiga Nombro
23971
Atomaj Propraĵoj
Atoma Radiuso
170 pm
Kovalenta Radiuso
-
Elektronegativeco
1,3 (Pauling-skalo)
Potencialo de jonigo
6,1979 eV
Atoma Volumo
16,7 cm3/mol
Termika Kondukto
0,1 W/cm·K
Oksidaj Ŝtatoj
3, 4
Aplikoj
Berkelium is mainly used for scientific research purposes.
Berkelium-249 is a common target nuclide to prepare still heavier transuranic elements and transactinides, such as lawrencium, rutherfordium and bohrium.
It is also useful as a source of the isotope californium-249.
Berkelium-249 is a common target nuclide to prepare still heavier transuranic elements and transactinides, such as lawrencium, rutherfordium and bohrium.
It is also useful as a source of the isotope californium-249.
Berkelium is harmful due to its radioactivity
Izotopoj
Stabilaj Izotopoj
-Malstabilaj Isotopoj
233Bk, 235Bk, 236Bk, 237Bk, 238Bk, 239Bk, 240Bk, 241Bk, 242Bk, 243Bk, 244Bk, 245Bk, 246Bk, 247Bk, 248Bk, 249Bk, 250Bk, 251Bk, 252Bk, 253Bk, 254Bk