A potassium atom has one outer-shell electron, and a bromine atom has seven outer-shell electrons.
Draw a dot-and-cross diagram to represent the ions formed from one potassium atom and one bromine atom.
119 exam-style questions on Edexcel GCSE Chemistry 2.3 Ionic bonding, covering 2.3.1 Ions and the formation of ionic bonds, 2.3.2 Naming and deducing formulae of ionic compounds, and 2.3.3 Giant ionic lattices. Each one has a worked solution and a mark scheme showing where the marks go.