Question detail
Why do elements in the same group of the periodic table exhibit similar chemical properties?
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. They have the same number of outer-shell electrons
- B. They have the same atomic number
- C. They have the same mass number
- D. They are all metals
Answer
The correct option is They have the same number of outer-shell electrons.
Explanation
The correct option is They have the same number of outer-shell electrons. They have the same number of outer-shell electrons is correct because it directly supports the approved learning objective to explain that elements in the same group have the same number of outer-shell electrons. This is tested in the subtopic The periodic table 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 The periodic table precisely. Repair marker 81b11f71 keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Outer-shell Electrons Confusion
Students often think that elements in the same group have the same total number of electrons instead of the same number of outer-shell electrons.
Focus on understanding that only the outer-shell electrons determine the group properties, not the total electron count.
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