November 1, 1952 — Einsteinium is first created

Einsteinium is a completely artifical element (atomic number 99) with a very short half-life (a about 1 and a third years). It was first discovered in the fallout from the detonation of the world’s first hydrogen bomb, code Ivy Mike, detonated at Enewetak Atoll on November 1, 1952.

As a trans-uranic element, it is extremely radioactive. It has no known applications other using it to develop other extremely radioactive trans-uranic elements with even higher atomic numbers – so far, it has been employed successfully in the creation of mendelevium (atomic number 101) and unsuccessfully in the attempted creation of ununennium (atomic number 119).

Quartz vial (9 mm diameter) containing ~300 micrograms of solid 253Es. The illumination produced is a result of the intense radiation from 253Es.
By Haire, R. G., US Department of Energy.
Touched up by Materialscientist at en.wikipedia. – [1], Haire, Richard G. (2006). “Einsteinium”. In Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 1-4020-3555-1. p. 1580
Transferred from en.wikipedia to Commons by User:Urutseg using CommonsHelper., Public Domain, Link

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