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  • Elements

    ACTINIUM
    89
    Ac
    [ 227 ]


    Name: actiniumGroup number: 0
    Symbol: AcGroup name: Actinoid
    Atomic number: 89Period number: 7
    Atomic weight: [ 227 ]Block: f-block
    CAS Registry ID: 7440-34-8Voice:
    Standard state: solid at 298 KColour: silvery
    Classification: MetallicAvailability:

    actinium
    This sample of uraninite contains some about 10-9 grammes of actinium at any one time. Image adapted with permission from Prof James Marshall"s (U. North Texas, USA) Walking Tour of the elements CD.

    Actinium is dangerously radioactive. The chemical behaviour of actinium is similar to that of the rare earths, particularly lanthanum. It is found naturally in uranium ores and actinium is 150 times more radioactive than radium.

    Isolation

    Here is a brief summary of the isolation of actinium.

    coming soon!

    Fluorides
  • AcF3
  • Chlorides
  • AcCl3
  • Bromides
  • AcBr3
  • Iodides
  • AcI3
  • Hydrides
  • AcH2
  • Oxides
  • Ac2O3
  • Sulfides
  • Ac2S3
  • Selenides
    none listed
    Tellurides
    none listed
    Nitrides
    none listed






    Our data and resources are taken from Web Elements