Why dont the noble gases react?

Answer 1

Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2) and have stable electronic configuration. Hence they are chemically inert and generally donot form compounds under normal conditions.

Answer 2

Noble gases have a full outer electron shell, making them highly stable and unreactive. Due to their configuration, they do not typically gain or lose electrons to form bonds with other elements. This stability is why noble gases are often found in their elemental form in nature.

Answer 3

Most elements react to achieve a full outer shell electrons, which is stable. The noble gasses already have a full outer shell and so are stable in their pure, elemental form.