Dumb question about electronic structure

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Electrons with parallel spin experience greater repulsion compared to those with opposite spin due to their similar magnetic fields. This principle explains why electrons in atomic subshells are paired with opposite spins to minimize repulsion. The discussion also highlights that two orbitals with one occupied by two electrons (paired) and another occupied singly will have less repulsion than two orbitals both occupied singly. Therefore, the repulsion is indeed greater in the latter scenario. Understanding these interactions is crucial for grasping electronic structure in atoms.
chriswwt
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I want to ask which type of the following would have a greater repulsion
electrons with parallel spin, electrons with opposite spin.
or it's just the same?
 
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Seems equivalent to asking what happens when two bar magnets are brought together?
 
Hi christwwt,

Electrons with parallel spin would experience greater repulsion than those with opposite spin. This is also the reason why electrons occupying the atomic subshells(1s,2s,2p,3s etc) are always paired in opposite spins.
 
thanks.
is that mean 2 orbitals with one occupied by 2 electrons and other with electron occupied singly,
and 2 orbitals both single occupied.
The repulsion between the latter one is greater than the former one?
 

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