66 Dy Dysprosium 162.5
Lanthanide
Dysprosium 镝
[Xe] 4f¹⁰ 6s²
- Period 6
- Group —
- Block f
- Solid
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁰ 5s² 5p⁶ 6s²
Orbital diagram (valence)
- Electrons per shell
- 2, 8, 18, 28, 8, 2
- Unpaired electrons
- 4
- Zeff (Slater)
- 2.85
Properties
- Atomic weight
- 162.5
- Electronegativity (Pauling)
- 1.22
- First ionization energy
- 573 kJ/mol
- Electron affinity
- no data
- Covalent radius
- 192 pm
- van der Waals radius
- 229 pm
- Melting point
- 1685 K
- Boiling point
- 2840 K
- Density
- 8.55 g/cm³
- Melting / boiling point
- 1411.8 °C / 2566.8 °C
- Common oxidation states
- +3
- Discovered
- 1886
Periodic trend
Data: PubChem periodic table (public domain); atomic weights are IUPAC abridged standard values; covalent radii from Cordero et al. (2008).