Can someone help me with orbital notation? I need help doing 1-3. Im very lost.
https://prnt.sc/ld53ge

Question

Tranquility · Answer

It's not that difficult. Do you know Hund's rule, Aufbau principle, and Pauli exclusion principle

eljaja · Answer

No I don't...

Tranquility · Answer

Uh

Tranquility · Answer

Hund's rule states that  you put one electron into each box before you can pair them up. So like for 2p orbital, there's three boxes and the first three electrons go into each of the three boxes. And then if you have a fourth electron, you can pair it up with the first box.

Aufbau principle is you have to fill up the lower energy orbitals before the higher energy orbitals. So you have to fill up 1s before 2s before 2p and so on

Pauli exclusion principle is that no two electrons can have the same 4 quantum numbers

eljaja · Answer

I think I get it now. Its easy, I just didn't understand the rule and principle. Thank you!

Tranquility · Answer

No problem! :)