Kaliforniumo
98
Cf
Grupo
Neniu
Perio
7
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
98
98
153
Ĝeneralaj Propraĵoj
Atoma Nombro
98
Atommaso
[251]
Amasa Nombro
251
Kategorio
Aktinoidoj
Koloro
Neniu
Radioaktiva
Jes
Named after California and the University of California
Kristala Strukturo
Simpla Sesangula
Historio
Californium was discovered by Stanley G. Thompson, Kenneth Street, Jr., Albert Ghiorso and Glenn T. Seaborg in 1950 at the University of California, Berkeley.
It was produced by the bombardment of curium with alpha particles.
Californium was isolated in macro quantities for the first time by Burris Cunningham and Stanley Thompson in 1958.
It was produced by the bombardment of curium with alpha particles.
Californium was isolated in macro quantities for the first time by Burris Cunningham and Stanley Thompson in 1958.
Elektronoj per ŝelo
2, 8, 18, 32, 28, 8, 2
Elektrona Agordo
[Rn] 5f10 7s2
Californium is produced in nuclear reactors and particle accelerators
Fizikaj Propraĵoj
Fazo
Solido
Denso
15,1 g/cm3
Fandpunkto
1173,15 K | 900 °C | 1652 °F
Bolpunkto
-
Varmo de Fuzio
Neniu
Varmo de Vaporiĝo
Neniu
Specifa Varmo Kapacito
-
Krusta Abundo
Neniu
Universa Abundo
Neniu
CAS Nombro
7440-71-3
PubChem Kunmetita Identiga Nombro
Neniu
Atomaj Propraĵoj
Atoma Radiuso
-
Kovalenta Radiuso
-
Elektronegativeco
1,3 (Pauling-skalo)
Potencialo de jonigo
6,2817 eV
Atoma Volumo
18,4 cm3/mol
Termika Kondukto
0,1 W/cm·K
Oksidaj Ŝtatoj
2, 3, 4
Aplikoj
Californium is used as a portable neutron source for discovery of metals such as gold or silver by on-the-spot activation analysis.
Neutrons from californium are employed as a treatment of certain cervical and brain cancers where other radiation therapy is ineffective.
Neutron moisture gauges use californium-252 to find water and petroleum layers in oil wells.
Neutrons from californium are employed as a treatment of certain cervical and brain cancers where other radiation therapy is ineffective.
Neutron moisture gauges use californium-252 to find water and petroleum layers in oil wells.
Californium is harmful due to its radioactivity
Izotopoj
Stabilaj Izotopoj
-Malstabilaj Isotopoj
237Cf, 238Cf, 239Cf, 240Cf, 241Cf, 242Cf, 243Cf, 244Cf, 245Cf, 246Cf, 247Cf, 248Cf, 249Cf, 250Cf, 251Cf, 252Cf, 253Cf, 254Cf, 255Cf, 256Cf