Px, Py, Pz  [ENDORSED]

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Sahand Fardi 1
Posts: 19
Joined: Wed Sep 21, 2016 2:56 pm

Px, Py, Pz

Postby Sahand Fardi 1 » Sat Oct 08, 2016 8:50 pm

Can someone please explain the difference between Px, Py, and Pz? Thank you!

Shirley_Zhang 3O
Posts: 35
Joined: Wed Sep 21, 2016 2:56 pm

Re: Px, Py, Pz  [ENDORSED]

Postby Shirley_Zhang 3O » Sun Oct 09, 2016 9:59 am

They describe the locations of electrons in a P-orbital. So instead of saying "these electron are in the front and back," we can say "their positions are on the x-axis"
since they are in P-orbital, we state their location as "Px"

same idea for Py and Pz

Yinhan_Liu_1D
Posts: 51
Joined: Sat Sep 24, 2016 3:00 am

Re: Px, Py, Pz

Postby Yinhan_Liu_1D » Wed Oct 19, 2016 10:51 pm

Shirley Zhang 4A wrote:They describe the locations of electrons in a P-orbital. So instead of saying "these electron are in the front and back," we can say "their positions are on the x-axis"
since they are in P-orbital, we state their location as "Px"

same idea for Py and Pz



Do you know how from n=2, l=1, m=-1 we could now it's e- in 2Px state?

I get the 2 and the P. But I don't know how to decide it's Px.

I would appreciate your help.
Thanks.

Shirley_Zhang 3O
Posts: 35
Joined: Wed Sep 21, 2016 2:56 pm

Re: Px, Py, Pz

Postby Shirley_Zhang 3O » Fri Oct 21, 2016 1:39 pm

Yinhan_Liu_2H wrote:
Shirley Zhang 4A wrote:They describe the locations of electrons in a P-orbital. So instead of saying "these electron are in the front and back," we can say "their positions are on the x-axis"
since they are in P-orbital, we state their location as "Px"

same idea for Py and Pz



Do you know how from n=2, l=1, m=-1 we could now it's e- in 2Px state?

I get the 2 and the P. But I don't know how to decide it's Px.

I would appreciate your help.
Thanks.



In my opinion, the positioning depends on how you decide to place the 3D Cartesian axis, so it's arbitrary. In the d-block, there are Dxy, Dxz, etc
I think they assign the coordinates is to give people a better understanding of where an electron locates relatively to other electrons graphically.
Maybe we can ask Dr. Lavelle about this during office hour :)

Janice Kim 3I
Posts: 33
Joined: Wed Sep 21, 2016 2:56 pm

Re: Px, Py, Pz

Postby Janice Kim 3I » Fri Oct 21, 2016 2:27 pm

Px, Py, Pz are the different orbitals that are within the p subshell. Each one is a different orientation and each is linked to a different number for the magnetic quantum number m_l.
For example, let's say n = 2. Then l = 0, 1. For l = 1 (the p orbital), m_l = -1, 0, 1. These three numbers correspond to the different orbitals Px, Py, and Pz.

Shirley_Zhang 3O
Posts: 35
Joined: Wed Sep 21, 2016 2:56 pm

Re: Px, Py, Pz

Postby Shirley_Zhang 3O » Sat Oct 22, 2016 12:53 pm

I confirmed with Dr. Lavelle that assigning coordinates ( x, y, z, etc) to orbitals is arbitrary. He will not test us on that, so we do not have to worry too much. :)


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