What are the specifics to using the Noble Gas shortcut? Additionally, for example, to write the electron configuration for Argon, are you allowed to just write [Ar]? or do you have to write [Ne] 3s^2 3p^6?
I don't think you can just write [Ar] for Argon. You won't be writing any actual configuration then. I'm pretty sure for noble gases, you have to use the previous one and write out all the valence electrons.