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Dysprosium (Dy)
Atomic number 66 · Lanthanide
| Atomic number | 66 |
|---|---|
| Atomic mass | 162.5 u |
| Molar mass | 162.5 g/mol |
| Category | Lanthanide |
| Group / period / block | — / 6 / f |
| Electron configuration | [Xe] 4f10 6s2 |
| Electrons per shell | 2, 8, 18, 28, 8, 2 |
| Electronegativity (Pauling) | 1.22 |
| Atomic radius | 175.0 pm |
| Density | 8.55 g/cm³ |
| First ionisation energy | 5.9391 eV |
| Melting point | 1685.15 K (1412.00 °C) |
| Boiling point | 2840.15 K (2567.00 °C) |
| Common oxidation states | +3 |
| Abundance in Earth's crust | 5.2 ppm |
Uses
Magnets in EV motors and wind turbines
Discovery
1886, Paul Émile Lecoq de Boisbaudran