Tb
INTRODUCTION
Terbium is one of the rare earth elements in the lanthanide series of the periodic table, with a silvery gray appearance. It ranks about 58th in natural abundance among the elements in crustal rock.
Terbium was named for the town of Ytterby in Sweden, the location of a quarry that yielded several rare earth elements.
BASIC INFORMATIONS
- Atomic Number
- 65
- Atomic Mass
- 158.92535
- Atomic radius
- 0.159
- Ionization energy
- 1st,2nd,3rd (3792)
- Electronic config
- 2,8,18,27,8,2
- Principal Valency
- +2
- Density g/cm³
- 8.27
- Melting point °C
- 1356
- Boiling point °C
- 3230
- Type of Element
- Metal
- Electronegativity
- N/A
- Element Category
- Lanthanide series
- Appearance
- Silvery gray solid
- Block
- f-block
- Period
- 8
- Group
- 12
- No of Isotopes
- 37
- Occurrence
- Combine form
- Abundance in ppm
- 1.2
- Year of Discovery
- 1880
EXTRACTION
It is obtain by ion exchange process
OXIDATION STATES
+4,+3,+2,+1 (Weakly basic)
MAJOR SOURCE
Monazit, Gadolinite
EXAMPLES OF COMPOUND PRESENT
Terbia
ECONOMIC IMPORTANCE
* Terbium is highly applicable in alloys, refractory (high-temperature) materials, and electronic apparatus.
* It has potential applications in lasers, X-rays, television tubes
