Group 1 alkali metals react vigorously with Group 7 halogens to form ionic salts.
Four examples of these reactions are shown in the table below.
| Reaction | Word equation |
|---|---|
| A | sodium + chlorine → \rightarrow\,→ sodium chloride |
| B | lithium + bromine → \rightarrow\,→ lithium bromide |
| C | rubidium + fluorine → \rightarrow\,→ rubidium fluoride |
| D | potassium + iodine → \rightarrow\,→ potassium iodide |
Explain, in terms of the electronic configurations and the relative reactivity of these elements, which of the reactions (A, B, C, or D) would be the most violent.
75 exam-style questions on Edexcel GCSE Chemistry 7.1 Group 1, covering 7.1.1 Classifying elements by group in the periodic table and 7.1.2 Properties and reactions of the alkali metals. Each one has a worked solution and a mark scheme showing where the marks go.