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Deena Doan 2F
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am


Postby Deena Doan 2F » Sun Oct 20, 2019 11:00 pm

Why can't there be parallel spins? Also, how do you know whether to start it up or down for the spins?

Althea Zhao 1B
Posts: 101
Joined: Mon Jun 17, 2019 7:24 am

Re: spin

Postby Althea Zhao 1B » Sun Oct 20, 2019 11:01 pm

Spins are opposite because electrons repel each other, and you always start up.

Posts: 100
Joined: Thu Jul 25, 2019 12:15 am

Re: spin

Postby RasikaObla_4I » Sun Oct 20, 2019 11:10 pm

According to the Pauli Exclusion Principle, if 2 electrons are in the same orbital, then the spin is paired which means they spin in the opposite direction. Usually the spin starts up.

Anna Heckler 2C
Posts: 102
Joined: Wed Sep 18, 2019 12:18 am

Re: spin

Postby Anna Heckler 2C » Sun Oct 20, 2019 11:13 pm

Parallel spins are not impossible according to Pauli Exclusion Principle. Conceptually, this is because electrons repel each other and their spins cannot be oriented in the same direction. It is considered most common to have the first spin up and the second one down.

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