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Spin Direction

Posted: Sun Apr 29, 2018 11:36 pm
by Bryan Jiang 1F
When we draw out an electron diagram, we indicate the first electrons in orbitals with the up arrow first. Does this imply that all electrons prefer to spin one way (the up arrow spin, counterclockwise) when occupying an orbital by itself?

Re: Spin Direction  [ENDORSED]

Posted: Mon Apr 30, 2018 3:10 pm
by Chem_Mod
When we denote two electrons as up spin and down spin, we are just referring to the fact that these two electrons have different spins, but we actually cannot know for sure which electron is spinning in what direction. Think of the spin as a "name" we give to the electrons.

Re: Spin Direction

Posted: Sun May 06, 2018 6:01 pm
by Madison Hacker 1L
We say spin up first when drawing the orbitals, but in reality it is not always the case that it is spin up.

Re: Spin Direction

Posted: Sun May 06, 2018 7:27 pm
by Alexander Hari 1L
They have no preference themselves to spin up or spin down, we just simply tend to write arrows pointing upwards to save time and for consistency. Although when two electrons occupy a single orbital, one must spin up while the other spins down.

Re: Spin Direction

Posted: Thu Jun 14, 2018 1:37 pm
by Kailie_Giebink_1E
do we always need to draw the spin?