62Sm150.36
Samarium (Sm)
Element 62 · Lanthanide
Samarium (Sm) is a chemical element with atomic number 62. It is classified as a lanthanide in period 6 of the periodic table (the f-block). Its standard atomic weight is 150.36 u and its ground-state electron configuration is [Xe] 4f⁶ 6s².
Samarium facts
| Atomic number (Z) | 62 |
|---|---|
| Symbol | Sm |
| Standard atomic weight | 150.36 u |
| Category | Lanthanide |
| Group | — (f-block) |
| Period | 6 |
| Block | f-block |
| Electron configuration | [Xe] 4f⁶ 6s² |
| Electronegativity (Pauling) | 1.17 |
| State at 20 °C | Solid |
| Protons / electrons | 62 / 62 |
| Neutrons (most common isotope, approx.) | 88 |
| Molar mass | 150.36 g/mol |