Image Iodine monochloride molecule

TLF ID R6857

This is a colour image of a model of a molecule of iodine monochloride, ICl. In this model, atoms are represented by coloured spheres held together by grey rods, representing covalent bonds. The iodine monochloride molecule contains one iodine atom (the deep red sphere) and one chlorine atom (the green sphere).



Educational details

Educational value
  • Iodine monochloride is a red, crystalline solid that melts at 27.2 degrees Celsius to form a brownish liquid. It is an example of an interhalogen compound because it has two different halogen atoms, in this case iodine and chlorine, within the one molecule. The properties of interhalogens are typically intermediate between those of the two constituent halogens. Iodine monochloride illustrates this characteristic, since in its liquid form it has an appearance similar to that of bromine, the member of the halogen family between iodine and chlorine.
  • The atoms in the molecule are connected by a single covalent bond. A covalent bond is formed when atoms share electrons, and a single covalent bond has two shared electrons, one contributed by each atom.
  • The type of model shown here, called a ball-and-stick model, is one of several ways of modelling molecules. This type is useful because it clearly shows the geometry of the molecule and the order (single, double or triple) of the bonds. However, because 'sticks' are used to represent bonds, this type of model does not represent the actual shape of the molecule as well as 'space-filling' models do.
Year level

7; 8; 9; 10; 11; 12

Learning area
  • science
Strand
  • Science/Science understanding

    Other details

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    • Publisher
    • Date of contribution: 20 Sep 2013
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
    • Copyright holder
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
    • Remarks: Copyright Education Services Australia Ltd
    • Author
    • Date of contribution: 2006
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
    • Remarks: creator
    • Content provider
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
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    • © Education Services Australia Ltd, 2013, except where indicated under Acknowledgments