66DyDysprosium162.5001[Xe] 4f¹⁰ 6s²
lanthanide
Dysprosium
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.
A stylized shell model. Electrons are quantum objects, not particles following these literal paths. Sizes and motion are illustrative.
Electrons by shell
Electron configuration
4f10
6s2
54 is the [Xe] core total across five shells.
At a glance
- Atomic number
- 66
- Atomic mass
- 162.5001 u
- Phase
- Solid
- Density
- 8.54 g/cm³
- Melting point
- 1,680 K
- Boiling point
- 2,840 K
- First ionization energy
- 573 kJ/mol
- Electronegativity
- 1.22
- Electron affinity
- 33.96 kJ/mol
- Molar heat capacity
- 27.7 J/(mol·K)
- Period
- 6
- Appearance
- silvery white
Conditions and isotopes affect measured properties. Some properties of short-lived elements are predicted. Electronegativity uses the Pauling scale.
Keep exploring
Explore the stories, imagery, and reference data in more depth. Properties with no value in the reference are marked unavailable.