Mission CB3 Ion Ratios

Mission CB3 pertains to the ratio of cations and anions in ionic compounds. Students must be familiar with electron dot models for elements and use and electron transfer model to explain the ion ratios. The mission consists of 36 questions organized into 9 Question Groups.

• The student should be able to explain the ion ratios that result between main group metals and nonmetals using an electron transfer model.
• The student should be able to use simple electron dot diagrams to model the ion ratios that form when electrons are transferred to form ionic compounds.

If you are not familiar with this topic, then you should first learn about the topic using our written Tutorial:

• Ionic Compounds