Chemistry
Grade-9
Easy
Question
A noble gas whose outermost electronic configuration is different from other group members?
- Og
- Cp
- He
- Ne
Hint:
He has two electrons in their outermost shell.
The correct answer is: He
- All the noble gases have eight electrons in the outermost shell in general.
- Only He has two electrons in the outermost shell as its outermost orbital is s orbital whose maximum electron holding capacity is two.
- Hence, He is different from other noble gases.
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