Group 18 rarely combines with other elements. They are the "loners" or noble gases. Why do these elements not need to bond with other elements?

Md Ariful Islam

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The main reason the noble gases do not need to bond with other is that their outermost subshells are filled. These are known as . Take helium for example. It only needs 2 valence electrons to fill its outermost subshell. The others need 8 valence electrons to be completely filled, which is the case for the rest of the noble gases.

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