Ac89 – Actinium

  • Atomic Number: 89
  • Atomic Symbol: Ac
  • Atomic Name: Actinium
  • Atomic Mass: 227.02775
  • CPK Hex Color: 70ABFA
  • Electron Configuration: [Rn]7s2 6d1
  • Electron Negativity: 1.1
  • Atomic Radius: 260
  • Ionization Energy: 5.17
  • Electron Affinity:
  • Oxidation States: 3
  • Standard State: Solid
  • Melting Point: 1324
  • Boiling Point: 3471
  • Density: 10.07
  • Group Block: Actinide
  • Year Discovered: 1899

Periodic Table of Elements. (2022, December 23). In PubChem and the National Library of Medicine. https://pubchem.ncbi.nlm.nih.gov/periodic-table/#view=table