Question detail
Which property of Group 7 elements can be predicted from the trends down the group?
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. Their reactivity decreases
- B. Their color becomes lighter
- C. Their density decreases
- D. Their atomic number increases
Answer
The correct option is Their reactivity decreases.
Explanation
The correct option is Their reactivity decreases. Their reactivity decreases is correct because it directly supports the approved learning objective to predict properties of Group 7 elements from trends down the group. 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 239f4f89 keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Reactivity Trends
Students often think that reactivity increases down Group 7 instead of decreases.
Remember that as you move down Group 7, the outer electrons are further from the nucleus, making it harder for the atom to attract electrons and thus decreasing reactivity.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.