3d and 4s

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Tiffany Cao 1D
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Joined: Fri Sep 29, 2017 7:03 am
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3d and 4s

Postby Tiffany Cao 1D » Sat Oct 21, 2017 4:06 pm

When will the energy for 4s be less than 3d?
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Timothy Kim 1B
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Re: 3d and 4s

Postby Timothy Kim 1B » Sat Oct 21, 2017 5:23 pm

I think after the 4s state/orbital is occupied and the electron enters the 3d state, then the 3d state is lower in energy than 4s.
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Annalise Eder 2L
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Joined: Sat Jul 22, 2017 3:01 am

Re: 3d and 4s

Postby Annalise Eder 2L » Sat Oct 21, 2017 6:54 pm

For Potassium and Calcium, 4s is lower in energy than 3d. From Scandium on 3d is lower in energy
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Matthew 1C
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Re: 3d and 4s

Postby Matthew 1C » Sat Oct 21, 2017 7:46 pm

^ this is because potassium and calcium don't have electrons that occupy the 3d orbital, whereas elements after do.
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