Dysprosium (Dy)
Dysprosium (Dy) is element 66 of the periodic table, a lanthanide in period 6, in the f-block. Its standard atomic weight is 162.5, so one mole of dysprosium atoms has a mass of 162.5 g. At room temperature it is a solid; it melts at 1411.85 °C and boils at 2566.85 °C.
| Atomic number | 66 |
|---|---|
| Symbol | Dy |
| Standard atomic weight | 162.5 |
| Molar mass | 162.5 g/mol |
| Category | Lanthanide |
| Group | f-block (lanthanide series) |
| Period | 6 |
| Block | f-block |
| Electron configuration | [Xe] 6s2 4f10 |
| Oxidation states | +3 |
| Electronegativity (Pauling) | 1.22 |
| Atomic radius (van der Waals) | 229 pm |
| First ionisation energy | 5.939 eV (573 kJ/mol) |
| Electron affinity | — |
| State at room temperature | Solid |
| Melting point | 1685 K (1411.85 °C) |
| Boiling point | 2840 K (2566.85 °C) |
| Density | 8.55 g/cm³ |
| Discovered | 1886 |
Lanthanides
La · LanthanumCe · CeriumPr · PraseodymiumNd · NeodymiumPm · PromethiumSm · SamariumEu · EuropiumGd · GadoliniumTb · TerbiumHo · HolmiumEr · ErbiumTm · ThuliumYb · Ytterbium
Calculate with Dysprosium
Atomic weight: IUPAC CIAAW standard atomic weight. Other properties: PubChem (U.S. National Library of Medicine, public domain). Values such as melting point and radius depend on how they were measured; check a data book for precise work.