The most vigorous reactions are between Caesium (low first I.E.) and Fluorine (very small, only needs to gain one electron).The least vigorous reaction is between beryllium and iodine.The salts formed are white solids. Most are ionic, but the beryllium halides are largely covalent.All the reactions involve electron transfer so are redox reactions.The halogen acts as the oxidising agents.2Li + Cl2 → 2LiCl
Reactions with Group 1 and 2 Metals
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Specification: Edexcel Chemistry (8CH0), AS-level, Topic 4B: The elements of Group 7 (halogens). Topic: Group 7.
Key terms in this lesson
- oxidising agent
- A substance that accepts electrons from another species, causing it to be oxidised, while it is itself reduced.
More in Group 7
- Group 7 Elements
- Trends in Melting and Boiling Temperature
- Trend in Electronegativity
- Trend in Reactivity
- Halogen-Halide Displacement Reactions
- Halogen Disproportionation Reactions
- Reaction of Halides with Sulfuric Acid
- Sodium Chloride
All 14 lessons in Group 7 · All Edexcel AS-level Chemistry topics