Paired Electrons

Moderators: Chem_Mod, Chem_Admin

Anika Chakrabarti 1A
Posts: 102
Joined: Sat Aug 24, 2019 12:17 am

Paired Electrons

Postby Anika Chakrabarti 1A » Sat Oct 19, 2019 2:42 pm

I'm having a hard time visualizing the electron configurations that we learned about on Friday. What does it mean when two electrons are paired? How is this different than two electrons being parallel?

Jessica Tran_3K
Posts: 50
Joined: Thu Jul 25, 2019 12:17 am

Re: Paired Electrons

Postby Jessica Tran_3K » Sat Oct 19, 2019 2:45 pm

When electrons are paired, that means they are in the same orbital and have opposite spin. When they are parallel, that means one electron is in each different orbital and they have the same spin.

Alice Chang 2H
Posts: 101
Joined: Fri Aug 30, 2019 12:18 am

Re: Paired Electrons

Postby Alice Chang 2H » Sat Oct 19, 2019 2:47 pm

Someone asked a similar question earlier, here's a link to the thread:
https://lavelle.chem.ucla.edu/forum/viewtopic.php?t=31218

Hope it helps!

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

Re: Paired Electrons

Postby HuyHa_2H » Sat Oct 19, 2019 2:50 pm

To add on to that, each orbital is placed one electron at a time. When all of the orbitals have been placed and there are still more electrons, then each one will be paired up with each electron that was already placed in the orbitals.

CynthiaLy4F
Posts: 103
Joined: Sat Jul 20, 2019 12:16 am

Re: Paired Electrons

Postby CynthiaLy4F » Sat Oct 19, 2019 2:56 pm

When electrons are paired, they occupy the same orbital with opposite spin. There can be no more than 2 electrons in an orbital based on the Pauli Exclusion Principle. When electrons are parallel, they occupy different orbitals with the same spin. This occurs because there is electron repulsion between electrons of the same shell, which is why electrons fill the orbitals with the lowest energy first.

Rhea Shah 2F
Posts: 97
Joined: Thu Jul 25, 2019 12:17 am

Re: Paired Electrons

Postby Rhea Shah 2F » Sun Oct 20, 2019 4:03 pm

Electrons are paired when they occupy the same orbital and have opposite spin. Electrons with parallel spins tend to avoid each other slightly, which lowers the energy of the electrons. Thus, paired electrons should have opposite spin to maximize the energy of the electrons.


Return to “Electron Configurations for Multi-Electron Atoms”

Who is online

Users browsing this forum: No registered users and 1 guest