Two elements are represented by R and S.
| Element | Number of occupied electron shells | Number of electrons in the outer shell |
|---|---|---|
| R | 2 | 7 |
| S | 4 | 7 |
Explain the charge on the ion formed by an atom of each element.
Predict which element is more reactive. Explain 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.