## X Y and Z

Michelle Chan 1J
Posts: 50
Joined: Thu Jul 25, 2019 12:16 am

### X Y and Z

I kind of have an idea of this, but can someone clarify how to determine the if an e- is in the X Y or Z plane? Thanks!

SnehinRajkumar1L
Posts: 101
Joined: Thu Jul 11, 2019 12:15 am

### Re: X Y and Z

It depends on which energy level the electron is in as well as the convention the problem uses when listing l values. The plane will correspond to the appropriate electron plane. I recommend watching the corresponding module for this lecture as he shows an example where he does just this.

Astrid Lunde 1I
Posts: 103
Joined: Sat Sep 07, 2019 12:16 am

### Re: X Y and Z

I think this is related to the model that was shown during the lecture today. Depending on the $m_l{}$ number we can use the table to find out if it is x, y, or z.

Qiu Ya Wu 4I
Posts: 107
Joined: Fri Sep 20, 2019 12:17 am

### Re: X Y and Z

In his lecture today, Lavelle emphasized that the plane the electron is found in is arbitrary and different textbooks associate different l values with different x,y, and z planes.

sarahsalama2E
Posts: 164
Joined: Fri Aug 30, 2019 12:16 am

### Re: X Y and Z

Depending on the particular orientation, then it will be in the x, y or z plane. This is contingent upon the ml number we find when solving for the quantum numbers.

Mariah
Posts: 104
Joined: Fri Aug 02, 2019 12:16 am

### Re: X Y and Z

Qiu Ya Wu 4F wrote:In his lecture today, Lavelle emphasized that the plane the electron is found in is arbitrary and different textbooks associate different l values with different x,y, and z planes.

So, because he said this we can assign the x,y,z variables to the values we have correct? That confused me as well.

Astrid Lunde 1I
Posts: 103
Joined: Sat Sep 07, 2019 12:16 am

### Re: X Y and Z

Mariah wrote:
Qiu Ya Wu 4F wrote:In his lecture today, Lavelle emphasized that the plane the electron is found in is arbitrary and different textbooks associate different l values with different x,y, and z planes.

So, because he said this we can assign the x,y,z variables to the values we have correct? That confused me as well.

I believe he is referring to the model he used in class to assign the electron a x,y,or z variable

Angela Patel 2J
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

### Re: X Y and Z

There is no convention for which magnetic quantum number is associated with which plane for orbitals. Because of this, either the values will be randomly assigned to a specific orbital (given by the problem/textbook/etc) or we will just have to write all of the possible options and accept that it is unknown which is which.

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