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  • Elements

    ARGON
    18
    Ar
    39.948 (1) g r


    Name: argonGroup number: 18
    Symbol: ArGroup name: Noble gas
    Atomic number: 18Period number: 3
    Atomic weight: 39.948 (1) g rBlock: p-block
    CAS Registry ID: 7440-37-1Voice:
    Standard state: gas at 298 KColour: colourless
    Classification: Non-metallicAvailability:

    argon
    Image adapted with permission from Prof James Marshall"s (U. North Texas, USA) Walking Tour of the elements CD.

    Argon is colourless and odourless. Argon is very inert and is not known to form true chemical compounds. It makes a good atmosphere for working with air-sensitive materials since it is heavier than air and less reactive than N2.

    Isolation

    Here is a brief summary of the isolation of argon.

    Argon is present to a small extent in the atmosphere and is obtained as a byproduct from the liquefaction and separation of air. This would not normally be carried out in the laboratory and argon is available commercially in cylinders at high pressure.

    Fluorides
    none listed
    Chlorides
    none listed
    Bromides
    none listed
    Iodides
    none listed
    Hydrides
    none listed
    Oxides
    none listed
    Sulfides
    none listed
    Selenides
    none listed
    Tellurides
    none listed
    Nitrides
    none listed






    Our data and resources are taken from Web Elements