Hund's rule

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Sofia Q
Posts: 49
Joined: Sat Aug 17, 2019 12:15 am

Hund's rule

Postby Sofia Q » Sat Oct 19, 2019 1:13 pm

Why do the e- in the same subshell occupy different orbitals with parallel spin?

Karina Kong 2H
Posts: 98
Joined: Thu Jul 25, 2019 12:16 am

Re: Hund's rule

Postby Karina Kong 2H » Sat Oct 19, 2019 1:18 pm

In order to achieve the lowest energy state and increased stability, the electrons need to have parallel spin.

Hailey Kim 4G
Posts: 110
Joined: Sat Jul 20, 2019 12:16 am

Re: Hund's rule

Postby Hailey Kim 4G » Sat Oct 19, 2019 1:21 pm

Hund's rule states that due to e- repulsion, e- in the same subshell occupy different orbitals with parallel spin. This allows for the lowest energy state. All orbital shells must be occupied by one e- before an orbital can be paired up with two.

Jesse H 2L
Posts: 58
Joined: Fri Aug 09, 2019 12:17 am
Been upvoted: 1 time

Re: Hund's rule

Postby Jesse H 2L » Sat Oct 19, 2019 1:30 pm

Hund's rule.

Amy Kumar 1I
Posts: 114
Joined: Thu Jul 11, 2019 12:15 am

Re: Hund's rule

Postby Amy Kumar 1I » Sat Oct 19, 2019 2:03 pm

The parallel spins are from electrons occupying empty orbitals first. After that, they start to pair up, which leads to opposite spins.

Joowon Seo 3A
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am
Been upvoted: 1 time

Re: Hund's rule

Postby Joowon Seo 3A » Sat Oct 19, 2019 2:11 pm

It is energetically favorable for electrons to have that configuration


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