Why noble gas neon is an unreactive element?

This is because it has a full outer valence shell! so there are 8 electrons and that means it doesn't have the urge the gain anymore 

Noble gases already have 8 valence electrons, which means their outermost energy level is completely filled. It doesn't need other elements to react with it. The noble gases are in the last group of the periodic table. Group 1, alkali meatballs, are the most reactive since they carry only 1 valence electrons and need to react with other elements

If you open the bottle of perfume then nothing but the smell will come out of it and yes it is a type of gas smell because it’s say it in english so i can understand better and you

Ci hope  it  you