Einsteinium
Einsteinium
Einsteinium (pronounced /ˌaɪnˈstaɪniəm/) is a synthetic element with the symbol Es and atomic number 99. It is a member of the actinide series and it is the seventh transuranic element.
Etymology
Einsteinium is named after the physicist Albert Einstein. Its name is derived from the German surname "Einstein," which means "a stone." The element was first identified in December 1952 by Albert Ghiorso and his team at the University of California, Berkeley.
Properties
Einsteinium is a heavy, radioactive, synthetic element of the actinide series. It is the second transuranium element that contains a major isotope that can be synthesized into a practical quantity.
Uses
Due to its high radioactivity, Einsteinium has no commercial applications. However, a small amount of einsteinium is used in scientific research. In particular, it is used in the production of higher transuranic elements and transactinides.
Related Terms
- Actinide series: The actinide series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.
- Transuranic element: Any chemical element with an atomic number greater than that of uranium (92).
- Transactinides: The transactinides form the major part of the superheavy elements, and all are synthetic and have only been obtained in laboratories.
External links
- Medical encyclopedia article on Einsteinium
- Wikipedia's article - Einsteinium
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