Electron Spin

Moderators: Chem_Mod, Chem_Admin

Kate_Santoso_4F
Posts: 72
Joined: Fri Sep 28, 2018 12:29 am

Electron Spin

Postby Kate_Santoso_4F » Tue Oct 30, 2018 9:04 pm

In regards to electron spin for unpaired electrons, how do we know if the electron is spinning clockwise or counterclockwise? Based on what I've seen in class, an unpaired electron has a counterclockwise spin with a magnetic spin quantum number of +1/2. Why is this so?

Cody Do 2F
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Electron Spin

Postby Cody Do 2F » Tue Oct 30, 2018 9:14 pm

I don't believe we've been taught a way to calculate whether an electron is +1/2 or -1/2. The important parts to remember regarding electron spin are:
+1/2 is counterclockwise and -1/2 is clockwise
Pauli Exclusion Principle: Only two electrons per orbital. If there are two electrons, then they spin opposite directions.
Hund's Rule: Put one electron in each orbital first BEFORE putting two electrons in one orbital. Make sure all the electrons spin the same directions.

charlotte_jacobs_4I
Posts: 63
Joined: Fri Sep 28, 2018 12:29 am

Re: Electron Spin

Postby charlotte_jacobs_4I » Tue Oct 30, 2018 10:06 pm

In terms of this rule is the up arrow electron positive or negative 1/2?

Kate_Santoso_4F
Posts: 72
Joined: Fri Sep 28, 2018 12:29 am

Re: Electron Spin

Postby Kate_Santoso_4F » Tue Oct 30, 2018 10:15 pm

The up arrow electron is positive 1/2 which indicates a counterclockwise spin and the down arrow electron is negative 1/2 which indicates a clockwise spin.


Return to “Quantum Numbers and The H-Atom”

Who is online

Users browsing this forum: No registered users and 2 guests