62 Sm 150.36
Samarium
Lanthanide
Samarium (Sm) is a chemical element with atomic number 62, classified as a lanthanide. At room temperature it is a solid. It was discovered in 1879 by Lecoq de Boisbaudran.
Properties
- Atomic number
- 62
- Atomic mass
- 150.36 u
- Category
- Lanthanide
- Group
- 0
- Period
- 6
- Block
- f-block
- Electron configuration
- [Xe] 4f⁶ 6s²
- Phase at STP
- Solid
- Density
- 7.52 g/cm³
- Melting point
- 1345 K (1071.8 °C)
- Boiling point
- 2067 K (1793.8 °C)
- Electronegativity
- 1.17
- Atomic radius
- 238 pm
- Ionization energy
- 5.644 eV
- Discovery
- 1879 · Lecoq de Boisbaudran
Common uses
Magnets, nuclear reactors, cancer treatment, lasers
Did you know?
Used in cancer treatment and has natural neutron absorption properties.
Experiment with the elements
Samarium doesn't form any compounds in our lab yet, but the periodic table sandbox lets you combine dozens of other real elements into real compounds — water, table salt, ammonia and many more — with their true chemical formulas.