4S vs. 3D Higher Energy

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Samantha Pedersen 2K
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4S vs. 3D Higher Energy

Postby Samantha Pedersen 2K » Sun Nov 15, 2020 1:32 pm

I came across the following question: "Answer the following questions related to the ground state electron configuration of titanium. What is the highest energy subshell?"

I know the electron configuration for titanium is [Ar] 3d^2 4s^2, so I thought that the highest energy subshell would be 4s. However, the answer said that 3d is the highest energy subshell. Is the answer incorrect, or could someone explain why 3d is higher energy than 4s?

Thank you!

Luveia Pangilinan 1A
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Re: 4S vs. 3D Higher Energy

Postby Luveia Pangilinan 1A » Sun Nov 15, 2020 2:21 pm

I think it is because even though 4s is fill in first, 3d orbital still has a higher in general if both orbitals were to be empty!

arisawaters2D
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Re: 4S vs. 3D Higher Energy

Postby arisawaters2D » Sun Nov 15, 2020 2:40 pm

I was confused with this as well because I thought a higher n value meant higher energy.

Faaizah Arshad 1H
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Re: 4S vs. 3D Higher Energy

Postby Faaizah Arshad 1H » Sun Nov 15, 2020 5:02 pm

I am also very confused on this topic. When is 3d a higher energy level than 4s, and when is 4s a higher energy level than 3d? I'd appreciate if someone could respond to this with a comprehensive answer.

Thank you!


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