Question detail
Which statement is true regarding the reactivity of halogens in displacement reactions?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The periodic table
Question
- A. Reactivity decreases down the group
- B. Reactivity increases down the group
- C. Reactivity remains constant down the group
- D. All halogens are equally reactive
Answer
The correct option is Reactivity decreases down the group.
Explanation
The correct option is Reactivity decreases down the group. Reactivity decreases down the group is correct because it directly supports the approved learning objective to explain displacement reactions between halogens and halide salts. This is tested in the subtopic Group 7 within The periodic table, so the reasoning must stay within AQA GCSE Chemistry 8462 Unit 4.1. The other options are weaker because they either confuse a nearby Chemistry concept, use the wrong subtopic context, or do not answer Group 7 precisely. Repair marker c248684a keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Displacement Reactions
Students often think that halogens can displace any halide salt regardless of their reactivity.
Remember that a more reactive halogen can displace a less reactive halide from its salt, while a less reactive halogen cannot displace a more reactive one.
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