Mission CB8 Expanded Octets

Mission CB8 pertains to situations in which an atom exceeds the octet rule. Students must be familiar with why it occurs and when it cannot occur and be able to recognize common cases of octet breakers. The mission consists of 28 questions organized into 7 Question Groups.

Learning Outcomes

  • The student should be able to describe what an expanded octet is and the importance of d orbitals for such octet breakers.
  • The student should be able to evaluate a Lewis electron dot diagram for a molecular compound or polyatomic ion with expanded octets to determine what may or may not be wrong with the diagram.
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