A crystal of an ionic compound has the formula MI2MI_2MI2. Each iodide ion has a charge of 1−1-1−. The isotope of element M M\,M in the crystal has a mass number of 88 and contains 38 protons.
Calculate the number of neutrons and the number of electrons in one M M\,M ion. Show your working.
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.