Question detail
As you go down Group 7, which of the following trends is observed in the properties of the elements?
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 and relative molecular mass increases
- B. Reactivity increases and relative molecular mass decreases
- C. Reactivity remains constant and relative molecular mass increases
- D. Reactivity decreases and relative molecular mass remains constant
Answer
The correct option is Reactivity decreases and relative molecular mass increases.
Explanation
The correct option is Reactivity decreases and relative molecular mass increases. Reactivity decreases and relative molecular mass increases is correct because it directly supports the approved learning objective to describe the trend in relative molecular mass down Group 7. 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 bea72ec5 keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Relative Molecular Mass Confusion
Students often confuse the trend in relative molecular mass with the trend in atomic number down Group 7.
Focus on understanding that relative molecular mass increases due to the addition of more atoms and their respective masses, while atomic number relates to the number of protons.
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