Berkelium

97
Bk
Kumpulan
Tiada
Kala
7
Blok
f
Proton
Elektron
Neutron
97
97
150
Ciri-Ciri Am
Nombor atom
97
Berat atom
[247]
Nombor jisim
247
Kategori
Aktinid
Warna
Tiada
Radioaktif
Ya
Named after Berkeley, California, the city of its discovery
Struktur hablur
Hexagonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 32, 27, 8, 2
Konfigurasi elektron
[Rn] 5f9 7s2
Bk
Just over one gram of berkelium has been produced in the United States since 1967
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
14.78 g/cm3
Takat lebur
1259.15 K | 986 °C | 1806.8 °F
Takat didih
3173.15 K | 2900 °C | 5252 °F
Haba pelakuran
Tiada
Haba pengewapan
Tiada
Muatan haba molar
-
Banyak pada kerak bumi
Tiada
Banyak pada alam semesta
Tiada
The
Kredit imej: Wikimedia Commons (Department of Energy - Office of Public Affairs)
The 60-inch cyclotron at the Lawrence Radiation Laboratory, University of California, Berkeley
Nombor CAS
7440-40-6
PubChem CID Number
23971
Ciri-Ciri Atom
Jejari atom
170 pm
Jejari kovalen
-
Keelektronegatifan
1.3 (Skala Pauling)
Kebolehan mengion
6.1979 eV
Isipadu atom
16.7 cm3/mol
Daya pengaliran terma
0.1 W/cm·K
Keadaan pengoksidaan
3, 4
Aplikasi
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 is harmful due to its radioactivity
Isotop
Isotop stabil
-
Isotop tidak stabil
233Bk, 235Bk, 236Bk, 237Bk, 238Bk, 239Bk, 240Bk, 241Bk, 242Bk, 243Bk, 244Bk, 245Bk, 246Bk, 247Bk, 248Bk, 249Bk, 250Bk, 251Bk, 252Bk, 253Bk, 254Bk