Ionic diagrams for binary ionic substances

Dot and cross diagrams as a model for binary ionic substances Dot and cross diagrams show the empirical formula/ratio of atoms to show how electrons are transferred Ions are shown with full outer shells, square brackets, and a charge in the top right corner. Ionic compounds are neutral overall, so positive and negative charge must balance. When positive ions do not have the same magnitude of charge as negative ions, multiple of some ions will be required.