Why are noble gases the most stable elements? This question can be answered simply: Noble gases have their levels and sublevels complete, which gives them great stability. But why does complete electronic configuration provide stability? This is due to two reasons: Noble gases do not tend to receive electrons, they have a low Electron Affinity. On the other hand, they resist losing their electrons, they have a high Ionization Energy.
In summary, noble gases are like the old man in the Christmas Carol, they neither give nor receive. To see this, let’s start by remembering some basic concepts: