## Molecule Editor

A lot of students love the molecule builder. It makes creating and visualizing molecules rather easy. A chemistry professor may have you build and submit a molecule as part of an exercise.

Using the Molecule Editor+ open

In this problem you will edit a molecule using the molecular drawing program shown below:

Are the molecules I've drawn chemically possible?+ open

The chemical editor you are using ensures that the structures you draw are correct in one very narrow sense, that they follow the rules for covalent bond formation and formal charge. However, there are many structures that follow these rules that are chemically impossible, unstable, do not exist in living systems, or are beyond the scope of this course. The editor will let you draw them because, in contrast to the rules of formal charge, these properties cannot be easily and reliably predicted from structures.

If you submit a structure that includes atoms that are not possible or are beyond the scope of this course, the software will warn you specifically about these parts of your structure and you will be allowed to edit your structure and re-submit. Submitting an improper structure will not count as one of your tries. In general, you should try to use only the atoms most commonly cited in this course: C, H, N, O, P, and S. If you want to learn about formal charge, you can play around with other atoms and unusual configurations and look at the structures that result.

The JME molecular editor is provided courtesy of Peter Ertl and Novartis; the licence can be found here.