## Magnetic Spin Number

Kimberly 1H
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### Magnetic Spin Number

If it's not possible for 2 electrons to have the same set of quantum numbers, how do parallel electrons exist in the same orbital?

Raj_Bains_2C
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Joined: Fri Sep 28, 2018 12:25 am
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### Re: Magnetic Spin Number

Parallel electrons do exist in the same orbital but they are in different sub-orbitals, as indicated by the m in the n, l, m quantum numbers.

Irene Zhou 1E
Posts: 73
Joined: Fri Sep 28, 2018 12:18 am

### Re: Magnetic Spin Number

They can exist in different orbitals. Two electrons cannot have the same exact four quantum numbers. The fourth number dictates the spin of the electron.

Posts: 39
Joined: Fri Sep 28, 2018 12:16 am

### Re: Magnetic Spin Number

I think that when we refer to parallel spin, we refer to it as in different subshells (e.g. px, py, pz). I'm not sure if this would be different if the atom was at an excited state, but since we learned that no two electrons can have the same four quantum numbers in an atom, I would assume not.

Olivia L 4E
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### Re: Magnetic Spin Number

Parallel shells are electrons with the same spin (up or down) in different orbitals but the same subshell. As a result, the only differing quantum number is ml. Electrons cannot have the same spin in the same orbital because that would give them identical quantum numbers.

Chem_Mod
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### Re: Magnetic Spin Number

The can have the same spin in different subshells (for example, +1/2 in px, +1/2 in py, +1/2 in pz).
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