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Astronomy Chemical element

Einsteinio

Einsteinio (Es) is a chemical element belonging to the category Inner transition metal, with atomic number 99 and atomic mass 252.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

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Astronomy · Chemical element

Einsteinium

EL2R

Identity

  • Name: Einsteinio
  • Symbol: Es
  • Atomic number: 99
  • Atomic mass: 252.0000 u

Position in the periodic table

  • Group: 3
  • Period: 7
  • Category: Inner transition metal

Physico-chemical properties

  • Standard state: Solid
  • Melting point: Very high (800°C to 3500°C)
  • Density: Very high
  • Electron configuration: [Rn] 5f¹¹ 7s²

Scientific description

Einsteinio is a chemical element with symbol Es and atomic number 99. It belongs to the category of Inner transition metal and occupies group 3 and period 7. Its standard atomic mass is 252.0000 u.