Facts about the Classification of the Element Terbium
Terbium is 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 Terbium
Terbium was discovered by Carl Gustaf Mosander in Sweden in 1843.

Occurrence of the element Terbium
Contained in many minerals, including cerite, gadolinite, monazite

Common Uses of Terbium
Used to dope Calcium fluoride, calcium tungstate and Strontium molybdate
Used in alloys
Electronic devices
Fluorescent lamps
Color TV tubes

The Properties of the Element Terbium

Name of Element : Terbium
Symbol of Element: Tb
Atomic Number: 65
Atomic Mass: 158.92534 amu
Melting Point: 1360.0 °C - 1633.15 °K
Boiling Point: 3041.0 °C - 3314.15 °K
Number of Protons/Electrons: 65
Number of Neutrons: 94
Crystal Structure: Hexagonal
Density @ 293 K: 8.27 g/cm3
Color: silvery-gray