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Quantum Numbers

Posted: Sat Oct 27, 2018 12:13 pm
by Matia Kim 1B
How do you know if the charge is positive 1/2 or negative 1/2?

Re: Quantum Numbers

Posted: Sat Oct 27, 2018 12:28 pm
by Chloe Qiao 4C
If you mean the magnetic spin quantum number, +1/2 is for the anti-clockwise rotation and -1/2 is for the clockwise rotation.

Re: Quantum Numbers

Posted: Sat Oct 27, 2018 12:55 pm
by Kessandra Ng 1K
I don't think you would need to know exactly which electron is +1/2 or -1/2; just know that the electrons in the same sub-shell must have opposite spin so one of them must be +1/2 and the other -1/2.

Re: Quantum Numbers

Posted: Sat Oct 27, 2018 2:47 pm
by Michael Torres 4I
In addition to what others have said I also recommend taking into consideration Hund's Rule and the electron configuration exceptions Lavelle mentioned (Cr and Cu) whenever asked anything about electron spin even if you may not know the specific spin of an electron in an orbital.

Re: Quantum Numbers

Posted: Sat Oct 27, 2018 2:52 pm
by Alexandra Albers 1D
As of yet, we haven't needed to know how to determine the spin of a specific electron. We do know that in the configuration, electrons should be organized with parallel spins first though and then have the electrons of opposing spins added afterwards.

Re: Quantum Numbers

Posted: Sat Oct 27, 2018 3:43 pm
by Manya Kidambi 3I
You would have to draw out the orbital diagram. If the arrow is pointing up, it is +1/2 and if it is pointing down it is -1/2.