ToolBoxy
68Er

Erbium

어븀 · エルビウム

Lanthanide

Atomic number68
ElementErErbium
Atomic mass167.26
CategoryLanthanide
Group3
Period6
Electron config[Xe] 4f12 6s2
Shells2,8,18,30,8,2
State (RT)Solid
Melting pt1529°C
Boiling pt2868°C
Electronegativity1.24
Discovered1843
Main usesFiber-optic amplifiers, pink glass
Er68
2 · 8 · 18 · 30 · 8 · 2
Bohr model

Group 3