So essentially when you line the slit up with the light source, it’s like lining up a scope on a target. If you don’t line it up the spectroscope won’t know exactly what you are trying to look at. And depending on what you’re using it for that can be crucial information. For example; I’m a gemology student and I’m using this spectroscope for identifying specific minerals therefore an off reading by even 1 or 2nm will throw off your results entirely. Which for me, can mean I told someone that their 5 thousand dollar gem is actually worth just a couple hundred. If that makes sense? Anyway I hope this could help you in some way!!

can you explain it to me this is what I am looking for me

​@@remus6846u can say its the shorthand notation (the simplified one) for example, the electronic configuration for Fe is 1s²2s²2p⁶3s²3p⁶4s²3d⁶ we can shorten this instead by using a noble gas with an atomic number lower than that for Fe, which is Ar the electronic configuration for Ar is: 1s²2s²2p⁶3s²3p⁶ so we can use that and simplify into [Ar] and then continue so we dont have to keep on writing 1s²2s²2p⁶3s²3p⁶ so for Fe, the shorthand notation will be [Ar] 4s²3d⁶ and this looks way shorter isnt it

Ya was looking for answers as well

Yea <2024>2025?

i know this is late, but yes it would be [Xe] 6s2 4f12 5d10

@anasipka5636 i know this is late but Its because the fully filled inner orbital is more stable than fully filled outer orbital and an empty inner one

constants never change