A student states that an atom is unreactive only if its outer shell contains 8 electrons.
| Atom | Electronic structure |
|---|---|
| X | 2 |
| Y | 2,82,82,8 |
| Z | 2,8,82,8,82,8,8 |
Evaluate the student's statement. Use all three electronic structures in your answer.
82 exam-style questions on AQA GCSE Chemistry 1.2 The periodic table, covering 1.2.1 The periodic table, 1.2.2 Development of the periodic table, 1.2.3 Metals and non-metals, 1.2.4 Group 0, 1.2.5 Group 1, and 1.2.6 Group 7. Each one has a worked solution and a mark scheme showing where the marks go.