62
Sm
Samarium
150.362
28182482
#62
Samarium
lanthanide· Solid·150.362 u
Samarium is a chemical element with symbol Sm and atomic number 62. It is a moderately hard silvery metal that readily oxidizes in air. Being a typical member of the lanthanide series, samarium usually assumes the oxidation state +3.
Read on Wikipedia
Identity
- Symbol
- Sm
- Atomic Number
- 62
- Atomic Mass
- 150.362 u
- Category
- lanthanide
- Block
- f-block
- Period
- 6
- Group
- 3
- Appearance
- silvery white
- Year Discovered
- 1879 CE
- Discovered By
- Lecoq de Boisbaudran
- Named By
- samarskite-(Y)
Electrons
- Configuration
- [Xe] 4f6 6s2
- Full Configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f6
- Shells
- 2, 8, 18, 24, 8, 2
- Electronegativity
- 1.17
- Electron Affinity
- 15.63
- Oxidation States
- +3, +2
- Ionization Energies
- 544.5, 1070, 2260, 3990
Physical Properties
- State at
- Solid
- Melting Point
- 1345
- Boiling Point
- 2173
- Density
- 7.52
- Molar Heat
- 29.54 J/(mol·K)
- Crystal Structure
- Rhombohedral
- Magnetic Ordering
- Paramagnetic
Mechanical
- Covalent Radius
- 198 pm
- Metallic Radius
- 180 pm
- Mohs Hardness
- 2
- Brinell Hardness
- 441 MPa MPa
- Bulk Modulus
- 37.8 GPa GPa
- Shear Modulus
- 19.5 GPa GPa
- Young's Modulus
- 49.7 GPa GPa
Thermal & Electrical
- Thermal Conductivity
- 13.3 W/(m K) W/(m·K)
- Electrical Conductivity
- 1.09 MS/m S/m
- Specific Heat
- 197 J/(kg K) J/(g·K)
- Heat of Vaporization
- 175 kJ/mol kJ/mol
- Heat of Fusion
- 8.62 kJ/mol kJ/mol
Abundance
- Universe
- 500 ppt
- Sun
- 1.00 ppb
- Meteorite
- 120 ppb
- Earth's Crust
- 7.05 ppm
- Ocean
- 4.5e-7 ppm
- Human Body
- 0