BRAINCAKEDisplacement Reactions
A more reactive halogen will displace a less reactive halide from a solution of its salt.
Chlorine is the most reactive because it is the smallest atom so the incoming electron gets closest to the nucleus and experiences the strongest nuclear attraction.
Any reaction is indicated by a colour change.
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Key terms in this lesson
- Half equation
- An equation that shows only the oxidation or only the reduction part of a redox reaction, including the electrons transferred.
More in Group 7
- Size of Atoms
- Electronegativity
- Melting and Boiling Points
- Trends in Oxidising Ability
- Halide Ions as Reducing Agents
- Sodium Chloride with Sulfuric Acid
- Sodium Bromide with Sulfuric Acid
- Sodium Iodide with Sulfuric Acid
All 16 lessons in Group 7 · All AQA AS-level Chemistry topics