This page presents exercises in classifying species in their symmetry point groups. When you press "New Problem", a window will appear with a structure/formula. Determine the point group, enter the value in the cell and press submit. Results appear in the table and the main window. When the small window first appears, you may have to drag it out of the way. When entering the answer, following the following rules:
- Enter the point group as a single "word". Do not use any spaces.
- You should try to use proper cases. Thus, enter D2h, not d2H. However, the page will correct for such errors.
- Substitute # for the infinity sign.
- If you miss a problem three times, pressing "Show Answer" will cause the correct answer to appear.