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.