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.
Practise Edexcel GCSE Chemistry Ionic bonding with exam-style questions for Foundation and Higher tier. 42 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.