paired and parallel

Moderators: Chem_Mod, Chem_Admin

Funmi Baruwa
Posts: 108
Joined: Wed Sep 30, 2020 9:50 pm

paired and parallel

Postby Funmi Baruwa » Wed Nov 04, 2020 6:45 am

What does it mean when you say two electrons are paired and two are parallel?

Faaizah Arshad 1H
Posts: 150
Joined: Wed Sep 30, 2020 10:01 pm
Been upvoted: 2 times

Re: paired and parallel

Postby Faaizah Arshad 1H » Wed Nov 04, 2020 7:46 am

Two electrons in the same orbital will be paired because they must have opposite spins. One will have an up spin and the other a down spin. Electrons in different orbitals can be parallel because they can have the same spin. Electrons in the same orbital cannot be parallel because that would oppose the Pauli Exclusion principle that states that no two electrons can have the same four electron quantum numbers because two electrons in the same orbital must have opposing spins.

Kiyoka Kim 3C
Posts: 98
Joined: Wed Sep 30, 2020 9:59 pm

Re: paired and parallel

Postby Kiyoka Kim 3C » Wed Nov 04, 2020 7:47 am

When two electrons are paired they have opposite spins. When two electrons are parallel they have the same spin.

Kelly Tran 1J
Posts: 142
Joined: Wed Sep 30, 2020 9:50 pm
Been upvoted: 1 time

Re: paired and parallel

Postby Kelly Tran 1J » Wed Nov 04, 2020 9:29 am

When two electrons are paired, it means that they are in the same orbital and will have opposite spin (Pauli Exclusion Principle) where one electron will be spin up and the other will be spin down.
When two electrons are parallel, it means that they occupy different orbitals and will have the same spin (Hund's Rule) where both electrons will either be spin up or spin down.

Adam Bustamante 1I
Posts: 98
Joined: Wed Sep 30, 2020 9:51 pm

Re: paired and parallel

Postby Adam Bustamante 1I » Wed Nov 04, 2020 9:34 am

Paired electrons means that one will be spin up and the other spin down whereas a parallel spin means there's only one electron in each shell with both spin up.

Jordan_OBrien_2k
Posts: 53
Joined: Wed Sep 30, 2020 9:43 pm

Re: paired and parallel

Postby Jordan_OBrien_2k » Thu Nov 05, 2020 11:17 am

When an electron is paired that means that their are two with opposite spin. When it is parallel, this means that they have the same spin. Electrons with the same spin cannot be in the same orbital of the same subshell according to the Hund's rule

Funmi Baruwa
Posts: 108
Joined: Wed Sep 30, 2020 9:50 pm

Re: paired and parallel

Postby Funmi Baruwa » Fri Nov 06, 2020 2:54 am

oh okay so spin and parallel and paired electrons go hand in hand. thank you

805593945
Posts: 43
Joined: Wed Sep 30, 2020 9:36 pm

Re: paired and parallel

Postby 805593945 » Fri Nov 06, 2020 6:16 am

Paired electrons are in the same orbitals, meaning that all orbitals must have one electron already, and that they are spinning in opposite direction. Parallel electrons mean that they are spinning in the same direction, meaning that the electrons are filling up the orbitals (Hund's rule) before fully occupy the orbital with two electrons. They are spinning in a parallel direction in different orbitals as it is more stable.

Funmi Baruwa
Posts: 108
Joined: Wed Sep 30, 2020 9:50 pm

Re: paired and parallel

Postby Funmi Baruwa » Tue Dec 08, 2020 5:26 pm

thanks!!

805593945
Posts: 43
Joined: Wed Sep 30, 2020 9:36 pm

Re: paired and parallel

Postby 805593945 » Wed Dec 16, 2020 9:06 am

Paired electrons are in the same orbital. This only happened once each orbital already contain at least one electron, as stated by Hund's rule.

Parallel electrons spin in the same directions but in different orbitals because of the electron repulsion.

David Liu 1E
Posts: 90
Joined: Wed Sep 30, 2020 10:07 pm

Re: paired and parallel

Postby David Liu 1E » Wed Dec 16, 2020 2:11 pm

paired electrons and parallel spin are different! paired electrons are the 2 that would be in the ml orbital with opposite spins (-1/2 and 1/2) and parallel electrons are ones that have the same spin meaning they're definitely not paired


Return to “Electron Configurations for Multi-Electron Atoms”

Who is online

Users browsing this forum: No registered users and 1 guest