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Dysprosium

Document v1 · published by Koskamo · updated 2026-10-04

Original source

Dysprosium (Dy) is chemical element 66, a lanthanide in the f-block, period 6 (PubChem).

  • Atomic number: 66
  • Symbol: Dy
  • Group: none (f-block)
  • Period: 6
  • Atomic mass: 162.500 u
  • Electron configuration: [Xe]6s2 4f10
  • Electronegativity (Pauling scale): 1.22
  • Atomic radius (van der Waals): 229 pm
  • Ionization energy: 5.939 eV
  • Oxidation states: +3
  • Standard state: Solid
  • Melting point: 1685 K
  • Boiling point: 2840 K
  • Density: 8.55 g/cm³
  • Chemical group: Lanthanide
  • Year discovered: 1886

Source and provenance

Original source
pubchem.ncbi.nlm.nih.gov
Published on Koskamo by
Koskamo
Citation version
Document v1
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PubChem periodic table data (NIH/NLM, pubchem.ncbi.nlm.nih.gov/ptable); group and period from Jefferson Lab via PubChem

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Version history

  1. Published by Koskamo

    Version 1