Noble gases, such as argon and neon, are known for being extremely non-reactive. neon and argon are non-reactive because they

They have a complete electronic configuration .their P shell is p6 therefore cannot gain or loose electron.

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

Idont know. if you want an answer you need to give us some context dude.