Berkliy
97
Bk
Guruh
Nomaʼlum
Davr
7
Block
f
Protonlar
Elektronlar
Neytronlar
97
97
150
General Properties
Atom raqami
97
Atom massasi
[247]
Mass Number
247
Turkum
Aktinoidlar
Ranggi
Nomaʼlum
Radioaktivlik
Ha
Named after Berkeley, California, the city of its discovery
Crystal Structure
Simple Hexagonal
Tarix
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.
Electrons per shell
2, 8, 18, 32, 27, 8, 2
Elektron konfiguratsiyasi
[Rn] 5f9 7s2
Just over one gram of berkelium has been produced in the United States since 1967
Physical Properties
Phase
Qattiq modda
Zichlik
14,78 g/cm3
Erish harorati
1259,15 K | 986 °C | 1806,8 °F
Qaynash harorati
3173,15 K | 2900 °C | 5252 °F
Heat of Fusion
Nomaʼlum
Heat of Vaporization
Nomaʼlum
Solishtirma issiqlik sigʻimi
-
Abundance in Earth's crust
Nomaʼlum
Abundance in Universe
Nomaʼlum
Image Credits: Wikimedia Commons (Department of Energy - Office of Public Affairs)
The 60-inch cyclotron at the Lawrence Radiation Laboratory, University of California, Berkeley
CAS Number
7440-40-6
PubChem CID Number
23971
Atomic Properties
Atom radiusi
170 pm
Kovalentlik radiusi
-
Elektrmanfiylik
1,3 (Poling boʻyicha)
Ionization Potential
6,1979 eV
Molyar hajm
16,7 cm3/mol
Issiqlik oʻtkazuvchanlik
0,1 W/cm·K
Oksidlanish darajasi
3, 4
Applications
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
Izotoplar
Barqaror izotoplar
-Beqaror izotoplar
233Bk, 235Bk, 236Bk, 237Bk, 238Bk, 239Bk, 240Bk, 241Bk, 242Bk, 243Bk, 244Bk, 245Bk, 246Bk, 247Bk, 248Bk, 249Bk, 250Bk, 251Bk, 252Bk, 253Bk, 254Bk