Rare gases are suitable because they

Rare gases, also known as noble gases, are suitable for a variety of applications for several reasons. Firstly, they are monoatomic, which means that each of their atoms exists as a single atom rather than as a molecule. This makes them chemically inert, which makes them safe to use in many applications where chemical reactions could be hazardous. Secondly, rare gases do not form ions easily, which means that they do not readily lose or gain electrons to form charged particles. This also contributes to their chemical stability and makes them suitable for use in applications where chemical reactions are undesirable. Thirdly, rare gases have a duplet or octet electronic configuration in their outermost shells, meaning that their outer electron shell is either full with two electrons or complete with eight electrons. This makes them stable and unreactive, which again makes them safe to use in many applications. Lastly, rare gases are often volatile gases, which means that they evaporate easily at room temperature and pressure. This property makes them useful in applications such as lighting, where they can be used to create bright and efficient light sources.