Question detail
What is the significance of the number of electrons in the outer shell of noble gases?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
The periodic table
Question
What is the significance of the number of electrons in the outer shell of noble gases?
Answer
The significance is that noble gases have a stable electron arrangement, which makes them unreactive. Helium, with two electrons, and the other noble gases, with eight, achieve full outer shells.
Explanation
This answer is strong as it explains the relationship between electron arrangement and the reactivity of noble gases. The question tests the student's understanding of why noble gases are chemically stable.
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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