Kaliforniy
98
Cf
Guruh
Nomaʼlum
Davr
7
Blok
f
Protonlar
Elektronlar
Neytronlar
98
98
153
Umumiy xususiyatlar
Atom raqami
98
Atom massasi
[251]
Mass raqami
251
Turkum
Aktinoidlar
Ranggi
Nomaʼlum
Radioaktivlik
Ha
Named after California and the University of California
Kristall tuzilma
Oddiy olti burchakli
Tarix
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.
Qobiqdagi elektronlar soni
2, 8, 18, 32, 28, 8, 2
Elektron konfiguratsiyasi
[Rn] 5f10 7s2
Californium is produced in nuclear reactors and particle accelerators
Jismoniy xususiyatlar
Faza
Qattiq modda
Zichlik
15,1 g/cm3
Erish harorati
1173,15 K | 900 °C | 1652 °F
Qaynash harorati
-
Eritish issiqligi
Nomaʼlum kJ/mol
Bugʻlanish issiqligi
Nomaʼlum kJ/mol
Solishtirma issiqlik sigʻimi
- J/g·K
Yer po‘stidagi miqdori
Nomaʼlum
Olamdagi miqdori
Nomaʼlum
CAS raqami
7440-71-3
PubChem CID raqami
Nomaʼlum
Atom xususiyatlari
Atom radiusi
-
Kovalentlik radiusi
-
Elektrmanfiylik
1,3 (Poling boʻyicha)
Ionlashish potensiali
6,2817 eV
Molyar hajm
18,4 cm3/mol
Issiqlik oʻtkazuvchanlik
0,1 W/cm·K
Oksidlanish darajasi
2, 3, 4
Qo‘llanilish sohalari
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
Izotoplar
Barqaror izotoplar
-Beqaror izotoplar
237Cf, 238Cf, 239Cf, 240Cf, 241Cf, 242Cf, 243Cf, 244Cf, 245Cf, 246Cf, 247Cf, 248Cf, 249Cf, 250Cf, 251Cf, 252Cf, 253Cf, 254Cf, 255Cf, 256Cf