Aufbau principle

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Samantha Joseph 1F
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Aufbau principle

Postby Samantha Joseph 1F » Sat Nov 04, 2017 10:13 pm

Just to clarify—is the Aufbau principle inclusive of the Puali exclusion rule and Hund's rule?

Ayona Sengupta
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Re: Aufbau principle

Postby Ayona Sengupta » Sat Nov 04, 2017 10:29 pm

As far as I'm aware, they're closely related and the Aufbau Principle originates from Pauli's exclusion principle. When we're writing out electronic configuration, I guess we just have to be mindful of all three.

Brigitte Phung 1F
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Re: Aufbau principle

Postby Brigitte Phung 1F » Sat Nov 04, 2017 10:44 pm

I agree with Ayona. Also,in the powerpoint, it was written that "we apply Pauli Exclusion Principle and Hund's Rule to determine e- configuration," which is what is accomplished through the Aufbau Principle. Hope this helps!

Ashin_Jose_1H
Posts: 51
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Re: Aufbau principle

Postby Ashin_Jose_1H » Sat Nov 04, 2017 10:45 pm

They're related. Pauli's Exclusion Principle and Hund's Rule deals with the arrangement of electrons within an orbital. Aufbau's Principle deals with the arrangement of the orbitals (which orbitals are filled first).

Cali Rauk1D
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Joined: Fri Sep 29, 2017 7:03 am

Re: Aufbau principle

Postby Cali Rauk1D » Thu Nov 09, 2017 11:19 am

Yes the pauli exclusion states there are no more than 2e- per orbital and Hund's rule says due to e- repulsion, e- in same subshell will occupy different orbitals with parallel spin


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