Quantum Numbers

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Tracey Tran 3I
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Joined: Thu Jul 11, 2019 12:16 am

Quantum Numbers

Postby Tracey Tran 3I » Sun Oct 20, 2019 3:10 pm

When does ms equal +1/2 and when does it equal -1/2

Posts: 51
Joined: Sat Sep 07, 2019 12:19 am

Re: Quantum Numbers

Postby Sadhana_Dicussion_4A » Sun Oct 20, 2019 3:13 pm

The ms quantum number represents the direction of the electron spin. If the electron has an upward spin, ms is equal to positive 1/2. If the electron has a downward spin, ms is equal to negative 1/2.

Ashley R 1A
Posts: 41
Joined: Sat Aug 24, 2019 12:16 am

Re: Quantum Numbers

Postby Ashley R 1A » Sun Oct 20, 2019 5:13 pm

Just to add on, this is most important when you are displaying electron configuration. As you are filling the orbitals of a sub shell, you first fill in upwards spinning electrons in each sub shell, denoted as +1/2, and and then you begin filling in the -1/2 downwards spinning electrons after every sub shell is full. This is because electrons have so much energy that they don't want to be in the same orbital unless they have to.

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