Ts Tennessine 117 (294) 17 7 p 117 [Rn] 5f14 6d10 7s2 7p5 2 8 18 32 32 18 7 None 1 50 ms 72.ms Synthetic tvkyB99vFaI Tennessine

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. Named after Albert Einstein 117 Temporary systematic IUPAC nomenclature

Einsteinium is harmful due to its radioactivity

Einsteinium is the first divalent metal in the actinide series

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.