Which group of elements is known as noble gases?

Noble gases are a group of elements found in Group 8A of the periodic table. This group includes helium, neon, argon, krypton, xenon, and radon. The defining characteristic of noble gases is that they have a full valence shell, which makes them highly unreactive under normal conditions. This stability is attributed to having the maximum number of electrons in their outermost energy level, resulting in a lack of tendency to gain or lose electrons.

The other groups listed do not have the same properties. For instance, Group 1A consists of alkali metals, which are very reactive and have only one electron in their outer shell. Group 2A contains alkaline earth metals that are also reactive, but they have two electrons in their outer shell. Lastly, Group 7A contains halogens, which are highly reactive nonmetals with seven valence electrons, and they tend to gain one electron to achieve a stable configuration. Thus, the noble gases' unique stability and inertness distinctly set them apart from the other groups.