Clarification on the 4th quantum number

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Bronson Mathos 1H
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Joined: Wed Sep 30, 2020 9:36 pm

Clarification on the 4th quantum number

Postby Bronson Mathos 1H » Sun Nov 15, 2020 7:33 pm

Concerning quantum numbers, will we ever be asked to determine the spin of the fourth quantum number ms? Or will we only be asked if a certain ms is possible in a set of all four quantum numbers?

SamayaJoshi1A
Posts: 104
Joined: Wed Sep 30, 2020 9:37 pm

Re: Clarification on the 4th quantum number

Postby SamayaJoshi1A » Sun Nov 15, 2020 7:34 pm

Pretty sure we will be asked this. The fourth quantum number is probably the easiest. There are only two options because it is referring to the spin. The first electron is going to be -1/2 while the second will be 1/2.

Jonathan3B
Posts: 96
Joined: Wed Sep 30, 2020 9:43 pm

Re: Clarification on the 4th quantum number

Postby Jonathan3B » Sun Nov 15, 2020 7:51 pm

ms will always be either -1/2 or 1/2. I recommend looking up a video on YouTube on quantum numbers, I did it and it was very useful.

Arnav Saud 2C
Posts: 122
Joined: Wed Sep 30, 2020 9:51 pm

Re: Clarification on the 4th quantum number

Postby Arnav Saud 2C » Sun Nov 15, 2020 8:37 pm

ms refers to the directions of the spin. +1/2 is up spin and -1/2 is down spin. A problem would probably give us n=2, l=0, ml=0, ms = +1/2. The answer would be 2s, and it would have one electron with an up spin.

Isabella Cortes 2H
Posts: 97
Joined: Wed Sep 30, 2020 9:37 pm

Re: Clarification on the 4th quantum number

Postby Isabella Cortes 2H » Sun Nov 15, 2020 8:44 pm

we probably will just have to determine if a certain ms will be possible in a set of 4 quantum numbers and we already know it can either be +1/2 or -1/2

Jaclyn Schwartz 1I
Posts: 106
Joined: Wed Sep 30, 2020 9:45 pm

Re: Clarification on the 4th quantum number

Postby Jaclyn Schwartz 1I » Sun Nov 22, 2020 11:48 pm

You will needs to know what ms is, which is the spin. For what we have to know in 14a it basically indicates one specific electron in the orbital vs when they don't mention ms it usually is has 2. Hopefully that makes sense! But you wont have to try to differentiate between +1/2 and -1/2


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