66Dy162.500
Dysprosium
Lanthanide
Solid at STP
Period 6Block FDiscovered 1886
[Xe]6s2 4f10
Dysprosium is a chemical element with the symbol Dy and atomic number 66. It is a rare earth element with a metallic silver luster. Dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 66 |
| Atomic Mass | 162.500 u |
| Electron Configuration | [Xe]6s2 4f10 |
| Oxidation States | +3 |
| Electronegativity | 1.22 (Pauling) |
| Atomic Radius | 229 pm |
| Ionization Energy | 5.939 eV |
| Block | F |
Physical Properties
| Appearance | silvery white |
| Standard State | Solid |
| Melting Point | 1685 K (1411.8 °C) |
| Boiling Point | 2840 K (2566.8 °C) |
| Density | 8.55 g/cm³ |
| Molar Heat | 27.7 J/(mol·K) |
| CPK Color | #1FFFC7 |
Classification
| Category | Lanthanide |
| Group Block | Lanthanide |
| Period | 6 |
| Block | F |
Discovery
| Year Discovered | 1886 |
| Discovered By | Lecoq de Boisbaudran |
| Electron Shells | 2, 8, 18, 28, 8, 2 |