Submitted by Patrick Holland / Yale University on Mon, 07/28/2008 - 09:36
My Notes
Course Level

This is an Inorganic Challenge that gives students an opportunity to practice the algorithm for difficult Lewis structures, and using good problem-solving technique. Inorganic Challenges are exercises designed to be solved by a small group of students. Some Challenges practice a problem-solving algorithm, some reinforce important concepts, and some involve creativity or games. You can pick and choose Challenges from our Web site to increase active learning in your classroom, and we ask that you contribute creative Challenges of your own to give a head start to teachers at other colleges and universities! Please visit

Implementation Notes

Our best results have been when the students can use part of a chalkboard, which facilitates sharing of ideas.

Time Required
1 h


Evaluation Methods


Evaluation Results

not too hard

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