鉲
98
Cf
族
無法計量
週期
7
區
f
個質子
電子
個中子
98
98
153
一般屬性
原子序數
98
標準原子質量
[251]
品質編號
251
類別
錒系元素
顏色
無法計量
放射性
是
Named after California and the University of California
晶體結構
簡單六角形
歷史
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.
每個外殼的電子
2, 8, 18, 32, 28, 8, 2
電子排布
[Rn] 5f10 7s2
Californium is produced in nuclear reactors and particle accelerators
物理性質
物態
固體
密度
15.1 g/cm3
熔點
1173.15 K | 900 °C | 1652 °F
沸點
-
熔化熱
無法計量
汽化熱
無法計量
比熱容
-
地殼豐度
無法計量
宇宙豐度
無法計量
CAS 編號
7440-71-3
Pubchem CID 編號
無法計量
原子性質
原子半徑
-
共價半徑
-
電負性
1.3 (鲍林标度)
電離電位
6.2817 eV
原子體積
18.4 cm3/mol
熱導率
0.1 W/cm·K
氧化態
2, 3, 4
應用
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
同位素
穩定同位素
-不穩定同位素
237Cf, 238Cf, 239Cf, 240Cf, 241Cf, 242Cf, 243Cf, 244Cf, 245Cf, 246Cf, 247Cf, 248Cf, 249Cf, 250Cf, 251Cf, 252Cf, 253Cf, 254Cf, 255Cf, 256Cf