Айнщайний
99
Es
Група
Неизвестно
Период
7
Блок
f
Протони
Електрони
Неутрони
99
99
153
Главни свойства
Атомен номер
99
Атомна маса
[252]
Масов номер
252
Категория
Актиниди
Цвят
Неизвестно
Радиоактивни
Да
Named after Albert Einstein
Кристална структура
Неизвестно
История
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.
Електрон на обвивка
2, 8, 18, 32, 29, 8, 2
Електронна конфигурация
[Rn] 5f11 7s2
Einsteinium is the first divalent metal in the actinide series
Физични свойства
Фаза
Твърди
Плътност
8.84 g/cm3
Температура на топене
1133.15 K | 860 °C | 1580 °F
Температура на кипене
-
Топлина на сливането
Неизвестно
Топлина на изпаряване
Неизвестно
Специфичен топлинен капацитет
-
Изобилие в земната кора
Неизвестно
Изобилие в вселената
Неизвестно
Кредити за снимката: Wikimedia Commons (National Nuclear Security Administration)
Einsteinium was first observed in the fallout from the Ivy Mike nuclear test
Номер на CAS
7429-92-7
Номер на PubChem CID
Неизвестно
Атомни свойства
Атомен радиус
-
Ковалентен радиус
-
Електроотрицателност
1.3 (Скала на Полинг)
Йонизационен потенциал
6.42 eV
Моларен обем
28.5 cm3/mol
Топлопроводимост
0.1 W/cm·K
Оксидационни държави
2, 3
Приложения
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
Изотопи
Стабилни изотопи
-Нестабилни изотопи
240Es, 241Es, 242Es, 243Es, 244Es, 245Es, 246Es, 247Es, 248Es, 249Es, 250Es, 251Es, 252Es, 253Es, 254Es, 255Es, 256Es, 257Es, 258Es