Answer:
Noble gases
Explanation:
Noble gases have their outermost shell full, thar why Noble gases are the most stable elements and they do not react.
Example
Element Electronic configuration
He Is² He has two electrons in its outer shell
Ne 1s²2s²p⁶
Ar [Ne] 3s²p⁶ The other noble gases have 8
Kr [Ar]3d¹⁰4s²p⁶ electrons in their outer shell.
Xe [Kr]4d¹⁰5s²p⁶ They are stable.
