Energy of 4s and 3d

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Ghadir Seder 1G
Posts: 134
Joined: Sat Sep 14, 2019 12:17 am

Energy of 4s and 3d

Postby Ghadir Seder 1G » Fri Oct 18, 2019 5:59 pm

How does the 3d orbital have less energy than the 4s orbital?
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chrischyu4a
Posts: 52
Joined: Thu Jul 25, 2019 12:16 am

Re: Energy of 4s and 3d

Postby chrischyu4a » Fri Oct 18, 2019 6:52 pm

Basically electrons in the 3d orbital have a lot of repulsion because of the electrons that occupy the 3s and 3p orbitals. Considering how the 4s orbital is further away and experiences less repulsion, it requires less energy for electrons to occupy it than the 3d orbital.
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