Question detail
Why are noble gases considered unreactive?
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 shell of electrons.
- B. They have no electrons.
- C. They have an odd number of electrons.
- D. They are all gases at room temperature.
Answer
They have a full outer shell of electrons.
Explanation
Noble gases are unreactive because they have a stable electron arrangement with a full outer shell of electrons.
Common mistake
Helium's Electron Configuration Mistake
Students often state that helium has eight electrons in its outer shell, similar to other noble gases.
Remember that helium has only two electrons in its outer shell, while all other noble gases have eight.
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