鑀
99
Es
族
無法計量
週期
7
區
f
個質子
電子
個中子
99
99
153
一般屬性
原子序數
99
標準原子質量
[252]
品質編號
252
類別
錒系元素
顏色
無法計量
放射性
是
Named after Albert Einstein
晶體結構
無法計量
歷史
Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952.
It was identified by Albert Ghiorso and co-workers at the University of California, Berkeley in collaboration with the Argonne and Los Alamos National Laboratories, in the fallout from the Ivy Mike nuclear test.
The new element was produced by the nuclear explosion in miniscule amounts by the addition of 15 neutrons to uranium-238.
It was identified by Albert Ghiorso and co-workers at the University of California, Berkeley in collaboration with the Argonne and Los Alamos National Laboratories, in the fallout from the Ivy Mike nuclear test.
The new element was produced by the nuclear explosion in miniscule amounts by the addition of 15 neutrons to uranium-238.
每個外殼的電子
2, 8, 18, 32, 29, 8, 2
電子排布
[Rn] 5f11 7s2
Einsteinium is the first divalent metal in the actinide series
物理性質
物態
固體
密度
8.84 g/cm3
熔點
1133.15 K | 860 °C | 1580 °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
圖片來源: Wikimedia Commons (National Nuclear Security Administration)
Einsteinium was first observed in the fallout from the Ivy Mike nuclear test
CAS 編號
7429-92-7
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
6.42 eV
原子體積
28.5 cm3/mol
熱導率
0.1 W/cm·K
氧化態
2, 3
應用
Einsteinium is mainly used for scientific research purposes.
The rare isotope einsteinium-254 is favored for production of ultraheavy elements.
Einsteinium-254 was used as the calibration marker in the chemical analysis spectrometer of the Surveyor 5 lunar probe.
The rare isotope einsteinium-254 is favored for production of ultraheavy elements.
Einsteinium-254 was used as the calibration marker in the chemical analysis spectrometer of the Surveyor 5 lunar probe.
Einsteinium is harmful due to its radioactivity
同位素
穩定同位素
-不穩定同位素
240Es, 241Es, 242Es, 243Es, 244Es, 245Es, 246Es, 247Es, 248Es, 249Es, 250Es, 251Es, 252Es, 253Es, 254Es, 255Es, 256Es, 257Es, 258Es