What is the atomic number of Einsteinium?

Einsteinium (Es) has atomic number 99.

What is the symbol for Einsteinium?

The chemical symbol for Einsteinium is Es.

The standard atomic weight of Einsteinium (Es) is 252.

99Es

아인슈타이늄 · アインスタイニウム

Actinide

Atomic number99

ElementEs — Einsteinium

Atomic mass252

CategoryActinide

Group3

Period7

Electron config[Rn] 5f11 7s2

Shells2,8,18,32,29,8,2

State (RT)Solid

Melting ptNo data

Boiling ptNo data

Electronegativity1.3

Discovered1952

Main usesResearch only

2 · 8 · 18 · 32 · 29 · 8 · 2

Bohr model