Facts about the Classification of the Element Erbium
Erbium classified as an element in the Lanthanide series as one of the "Rare Earth Elements" which can located in Group 3 elements of the Periodic Table and in the 6th and 7th periods. The Rare Earth Elements are divided into the Lanthanide and Actinide series. The elements in the Lanthanide series closely resemble lanthanum, and one another, in their chemical and physical properties. Their compounds are used as catalysts in the production of petroleum and synthetic products.

Brief Facts about the Discovery and History of the Element Erbium
Erbium was discovered by Carl Mosander in Sweden in 1843

Occurrence of the element Erbium
Found in monazite sand ores

Common Uses of Erbium
Used in metallurgy
Nuclear research
Color glass
Color porcelain
Photographic filter

The Properties of the Element Erbium
Name of Element : Erbium
Symbol of Element : Er
Atomic Number: 68
Atomic Mass: 167.26 amu
Melting Point: 1522.0 °C - 1795.15 °K
Boiling Point: 2510.0 °C - 2783.15 °K
Number of Protons/Electrons: 68
Number of Neutrons: 99
Crystal Structure: Hexagonal
Density @ 293 K: 8.795 g/cm3
Color: silvery