What is noble gas notation?
“Noble gas notation” means that in writing out an electron configuration for an atom, rather than writing out the occupation of each and every orbital specifically, you instead lump all of the core electrons together and designate it with the symbol of the corresponding noble gas on the periodic table (in brackets). I know you said don’t JUST give examples, but since I have given a description of what noble gas notation is, I will provide one simple example in addition. If I wrote out the FULL electron configuration for a sodium atom, it would be 1s2 2s2 2p6 3s1. But if I instead use noble gas notation, everything in the 1st and 2nd shells (the core electrons) would be designated as being equivalent to Neon, the closest noble gas that occurs before sodium on the periodic table. so using noble gas notation, the electron configuration of sodium becomes [Ne]3s1. Hope this makes things more clear!
