Image Hydroxylamine molecule

TLF ID R6850

This is a colour image of a model of a molecule of hydroxylamine, NHâ‚‚OH. In this model, atoms are represented by coloured spheres held together by grey rods, representing covalent bonds. The hydroxylamine molecule consists of one nitrogen atom (the blue sphere), one oxygen atom (the red sphere) and three hydrogen atoms (the grey-white spheres).



Educational details

Educational value
  • Hydroxylamine is a white, crystalline solid. It does not occur naturally but is synthesised for use in some chemical industries.
  • The atoms in the hydroxylamine molecule are connected by single covalent bonds. A covalent bond is formed when atoms share electrons. A single covalent has two shared electrons, one contributed by each atom. Because the nitrogen atom is able to contribute three electrons, it is able to participate in three covalent bonds. Similarly, the oxygen can form two bonds because it is able to contribute two electrons, whereas each hydrogen atom has only one electron to share and so can form only one bond.
  • The single bond between the nitrogen and oxygen atoms allows rotation of hydrogen atoms to occur, and the shape of the molecule can vary slightly as a result.
  • 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

    Contributors
    • 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.