The ions of Noble gases, group VIII elements have a full octet configuration on their outermost shell and as such are highly stable.
The periodic table is a systematic arrangement of elements in order of their atomic numbers into a set of 8 columns each called groups and a set of 7 rows each called a period.
Elements are arranged in different groups according to the number of Valence electrons they have.
The same is evident in group 7 elements are highly electronegative and have high electron affinity and as such are unstable and reactive.
Consequently, the Noble gases ion has a stable Valence electron configuration.
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