Are electrons always removed from the 4s orbital before the 3d orbital?

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EricZhao3G
Posts: 51
Joined: Tue Oct 08, 2019 12:16 am

Are electrons always removed from the 4s orbital before the 3d orbital?

Postby EricZhao3G » Mon Oct 21, 2019 3:33 pm

I know the 4s orbital fills first before the 3d orbital because the 4s orbital is lower in energy, but are electrons always removed from the 4s orbital first as well?

Vanessa Chuang 4F
Posts: 51
Joined: Sat Aug 24, 2019 12:18 am

Re: Are electrons always removed from the 4s orbital before the 3d orbital?

Postby Vanessa Chuang 4F » Mon Oct 21, 2019 3:42 pm

Much like the way the orbital fills in a specific order, electrons also remove in a particular way Because 3d has a higher energy, the electron will be removed from 4s first.

Megan Vu 1J
Posts: 101
Joined: Thu Jul 25, 2019 12:15 am

Re: Are electrons always removed from the 4s orbital before the 3d orbital?

Postby Megan Vu 1J » Mon Oct 21, 2019 3:47 pm

Yes, electrons are removed first from 4s rather than 3d orbital. This is due to the fact that 4s always have lower ionization energy, while 3d has higher ionization energy. Thus, the electrons are always being removed from the 4s orbital easily compared to 3d, which contains filled shells.

Esha Chawla 2E
Posts: 108
Joined: Thu Jul 25, 2019 12:17 am

Re: Are electrons always removed from the 4s orbital before the 3d orbital?

Postby Esha Chawla 2E » Mon Oct 21, 2019 3:51 pm

EricZhao3G wrote:I know the 4s orbital fills first before the 3d orbital because the 4s orbital is lower in energy, but are electrons always removed from the 4s orbital first as well?


And I think this becomes even more clear when you write the electron configuration of a given atom. Whenever, you write the electron configuration with an atom that has electrons in a "d-orbital" state, you write the d-orbital before you write the s-orbital. Thus, you remove the electron from the s-orbital before the d-orbital.

105311039
Posts: 107
Joined: Fri Aug 02, 2019 12:16 am

!

Postby 105311039 » Mon Oct 21, 2019 3:53 pm

Yes! The 4s electrons are removed before the 3d electrons!

Jamie Hwang 2F
Posts: 104
Joined: Thu Jul 25, 2019 12:16 am

Re: Are electrons always removed from the 4s orbital before the 3d orbital?

Postby Jamie Hwang 2F » Mon Oct 21, 2019 5:09 pm

Is it because 4s is in a higher shell than 3d? Since 4s is in the shell further away from the nucleus than 3d, it would be removed first?

Ziyan Wang 3J
Posts: 51
Joined: Wed Sep 18, 2019 12:22 am

Re: Are electrons always removed from the 4s orbital before the 3d orbital?

Postby Ziyan Wang 3J » Tue Oct 22, 2019 11:24 am

Yes, electrons with higher energy level are always removed first, and always in -f -p -d -s order


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