Pauli Exclusion Principle

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104904344
Posts: 27
Joined: Fri Sep 28, 2018 12:27 am

Pauli Exclusion Principle

Postby 104904344 » Mon Oct 22, 2018 7:34 pm

Can someone explain why there can't be no more than 2e- per orbital? Why do their spins must be paired?

Kate_Santoso_4F
Posts: 72
Joined: Fri Sep 28, 2018 12:29 am

Re: Pauli Exclusion Principle

Postby Kate_Santoso_4F » Mon Oct 22, 2018 8:19 pm

In short, the Pauli Exclusion Principle states that in an atom or molecule, no two electrons can have the same four quantum numbers. Because an orbital can only contain a maximum of two electrons, the two electrons must have opposing spins. The two spin states of an electron can be represented as clockwise or counterclockwise rotation around an axis passing through the electron.

904914909
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

Re: Pauli Exclusion Principle

Postby 904914909 » Mon Oct 22, 2018 8:23 pm

This answer above is a great explanation!

Catly Do 2E
Posts: 64
Joined: Fri Sep 28, 2018 12:24 am

Re: Pauli Exclusion Principle

Postby Catly Do 2E » Mon Oct 22, 2018 8:44 pm

Essentially the Pauli exclusion principle doesn't allow the electrons to have the same exact quantum numbers. So to occupy the same orbital, the spin has to be different.


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