Sodium oxide is an ionic compound, containing sodium ions, Na+\text{Na}^+Na+, and oxide ions, O2−\text{O}^{2-}O2−.
Table 1 shows the electronic configurations of sodium and oxygen atoms.
Table 1
| Atom | Electron configuration |
|---|---|
| sodium | 2.8.1 |
| oxygen | 2.6 |
Explain how sodium and oxygen atoms form the ions in sodium oxide, and how these ions are arranged in solid sodium oxide.
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.