Question detail

Which noble gas is the exception with only two electrons in its outer shell?

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

Helium

Helium is the only noble gas that has two electrons in its outer shell, while all other noble gases have eight.

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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