99

Es

Einsteinium
[ 252 ]
 Historical Information

Einsteinium was identified by Ghiorso and others (Berkeley, California, USA) in 1952 in radioactive debris from the first large thermonuclear bomb explosion, which took place in the Pacific in November 1952. In 1961, a sufficient amount of einsteinium was produced to permit separation of a macroscopic amount of 253Es.
Basic Information Shells
  • Name:Einsteinium
  • Symbol: Es
  • Atomic number: 99
  • Atomic weight: [ 252 ]
  • Standard state: solid at 298 K
  • Group in periodic table:
  • Group name:Actinoid
  • Period in periodic table: 7
  • Block in periodic table: f-block
  • Classification: Metallic
 Einsteinium
Uses Trivia
  • It has no uses.

Einsteinium is radioactive rare earth metal named after Albert Einstein. It is of no commercial importance and only a few of its compounds are known.