A student is researching materials for solid-state batteries and focuses on lithium nitride, Li3N\text{Li}_3\text{N}Li3N, as a potential fast ionic conductor.
Lithium nitride contains the nitride ion, N3−\text{N}^{3-}N3−.
Give the formula of the lithium ion in lithium nitride.
32 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.