Symbol Er
Atomic Number 68
Atomic Mass 167.26 g.mol -1
Discovered by Nobel Institute for Physics in 1957

Chemical Properties of Erbium

Group Lanthanides Melting point 1522 °C
Period 6 Boiling point 2510 °C
Block f Density (g cm−3) 9.07
Atomic number 68 Relative atomic mass 167.259  
State at 20°C Solid Key isotopes 166Er 
Electron configuration [Xe] 4f126s2  CAS number 7440-52-0
ChemSpider ID 22416 ChemSpider is a free chemical structure database

What is Erbium?

  • Erbium is a chemical radioactive element present as the eleventh element in the lanthanide series of the periodic table. The pure form of the element is a metal.
  • Naturally, occurring Erbium is found in chemical combination with other naturally occurring elements. When it is artificially isolated its appearance is a silvery-white solid metal.

Uses of Erbium

  • It is metal used to color lenses of glasses.
  • They are used as control rods in a nuclear reactor.
  • It has a vital application in metal alloys.
  • Erbium ion’s unique wavelength aids laser surgery.

Properties of Erbium

  • The pure form of Erbium metal is malleable.
  • They are very stable and they do not oxidize quickly when exposed to air when compared to other rare earth metals.
  • It comprises of properties that are similar to other rare earth materials or lanthanides.
  • It is an interesting probe for a large variety of physical effects due to its unique properties.

Certain Facts About Erbium

  • Although Erbium is considered as a rare metal, it is actually not since it is the forty-fifth abundant element found in the earth’s crust.

Practise This Question

What is the meaning of density as a standalone term?