99

Radioactive

Es

Einsteinium

(252)

Actinide
Solid

Discovery

Seaborg, Glenn T. (1952)

Etymology

Meaning

In honour of Einstein

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Face-centered cubic

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

860.0 °C

1133.15 K

Electronegativity

1.30