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Px, Py, Pz

Posted: Sat Oct 08, 2016 8:50 pm
by Sahand Fardi 1
Can someone please explain the difference between Px, Py, and Pz? Thank you!

Re: Px, Py, Pz  [ENDORSED]

Posted: Sun Oct 09, 2016 9:59 am
by Shirley_Zhang 3O
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

Re: Px, Py, Pz

Posted: Wed Oct 19, 2016 10:51 pm
by Yinhan_Liu_1D
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.

Re: Px, Py, Pz

Posted: Fri Oct 21, 2016 1:39 pm
by Shirley_Zhang 3O
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 :)

Re: Px, Py, Pz

Posted: Fri Oct 21, 2016 2:27 pm
by Janice Kim 3I
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.

Re: Px, Py, Pz

Posted: Sat Oct 22, 2016 12:53 pm
by Shirley_Zhang 3O
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. :)