S and d orbitals  [ENDORSED]

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Maldonado3K
Posts: 39
Joined: Fri Sep 29, 2017 7:07 am

S and d orbitals

Postby Maldonado3K » Sun Apr 29, 2018 11:42 pm

Why does 3d come after 4s?

Komal Prakash 1H
Posts: 30
Joined: Fri Apr 06, 2018 11:04 am
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Re: S and d orbitals

Postby Komal Prakash 1H » Sun Apr 29, 2018 11:48 pm

4s orbitals have a lower energy than 3d orbitals, so the 4s orbital fills up before the 3d orbital (you fill up lower energy orbitals before the higher energy ones).

Jimmy lira-1G
Posts: 61
Joined: Fri Apr 06, 2018 11:03 am

Re: S and d orbitals  [ENDORSED]

Postby Jimmy lira-1G » Sun Apr 29, 2018 11:51 pm

4s orbitals have lower energy than 3d , so 4s are filled first ; 4s electrons are lost first during ionization so the 4s orbitals must have a higher energy then 3d orbitals which is why 3d comes after 4s


Here's a helpful link

https://chem.libretexts.org/Core/Physic ... s_Orbitals

-Jimmy Lira 1-g


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