About this Simulation

This interactive simulation enables learners to construct and visualise dot and cross diagrams for polyatomic ions. Students explore electron distribution, valence electrons, and bonding patterns by dragging electrons into position and checking their answers against correct models. Real-time feedback supports conceptual understanding of ionic structures.

Learning objectives: Represent electron configuration in polyatomic ions using dot and cross notation | Identify and count valence electrons in multi-atom ionic species | Understand the relationship between electron arrangement and ion charge and stability