NEETChemistryChemical Bonding and Molecular Structure
Which noble gases have a particularly stable outer shell configuration of eight (octet) electrons?
Options
- AAll noble gases
- BHelium only
- CNoble gases except helium
- DNoble gases except neon
Correct answer
C. Noble gases except helium
Step-by-step solution
Kössel notes that all noble gases have stable outer shell configurations, but helium is the exception, having a duplet (two electrons) in its outer shell.