Sm
Samarium150.36 (2)
Samarium was discovered spectroscopically by its sharp absorption lines in 1853 by Jean Charles Galissard de Marignac in an "earth" called didymia. The element was isolated in 1879 by Lecoq de Boisbaudran from the mineral samarskite, named in honour of a Russian mine official, Colonel Samarski, and which therefore gave samarium its name.
- Name:Samarium
- Symbol: Sm
- Atomic number: 62
- Atomic weight:150.36 (2)
- Standard state: solid at 298 K
- Group in periodic table:
- Group name:Lanthanoid
- Period in periodic table: 6
- Block in periodic table: f-block
- Classification: Metallic
- alloys
- headphones
- absorber in nuclear reactors
It is a rare earth metal. It is found with other rare earth elements in minerals including monazite and bastnaesite and is used in electronics industries.