In order to be able to view the HCN molecule a chime plug in is installed, if you do not have a chime plug in you can download it free from this site.

http://www.mdli.com/download/chime/

It takes about 10 minutes to download, and 2 minutes to install.....But it is worth the wait!

To rotate the molecule around left click and drag the mouse

*HINT* -  If you right click on the molecule, and choose the option display, there are several different ways that you can view the hydrogen cyanide molecule.