Question detail
Which of the following is a characteristic of noble gases?
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 a full outer electron shell
- B. They readily form compounds with other elements
- C. They have high reactivity
- D. They are all solid at room temperature
Answer
The correct option is They have a full outer electron shell.
Explanation
The correct option is They have a full outer electron shell. They have a full outer electron shell is correct because it directly supports the approved learning objective to explain how reactions of elements relate to electron arrangement and atomic number. This is tested in the subtopic Metals and non-metals 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 Metals and non-metals precisely. Repair marker 269e9c02 keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Electron Arrangement
Students often confuse the number of outer electrons with the atomic number when explaining how reactions of elements relate to electron arrangement.
Emphasize that the atomic number indicates the number of protons and thus the total number of electrons in a neutral atom, while the outer electron count specifically determines the element's reactivity.
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