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Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: Aesuuki on July 10, 2021, 05:55:23 PM

Title: Electron Configurations?
Post by: Aesuuki on July 10, 2021, 05:55:23 PM: So i understand the theory behind shells, subshells and orbitals, and how there are s,p,d,f orbitals with the energy the electrons need to access them increasing in that order.

At the moment i know: In the 1st group, hydrogen is 1s¹ and helium is 1s².

The 2nd group all have 1s² plus up to one 2s orbital and three 2p orbitals. (This means the 2nd group has 8 electron spaces because one orbital can only allow 2 electrons.)

I know the 3rd group has the same orbitals as the 2nd group plus a d orbital and that it can allow 10 electrons. That's about it though.

That is probably really hard to understand in the way I phrased it, but I tried.

I did find a method to calculate the electron configuration relatively easily (https://drive.google.com/file/d/14BlJf7WLCzHpltrmHPm_MIDFcgfDY74F/view?usp=sharing (https://drive.google.com/file/d/14BlJf7WLCzHpltrmHPm_MIDFcgfDY74F/view?usp=sharing)) without needing any of this, but I really don't want to hide behind a methord and not understand what's happening
Title: Re: Electron Configurations?
Post by: Corribus on July 10, 2021, 11:43:29 PM: Quote from: Aesuuki on July 10, 2021, 05:55:23 PM
So i understand the theory behind shells, subshells and orbitals, and how there are s,p,d,f orbitals with the energy the electrons need to access them increasing in that order.
Not totally correct as far as the energy part goes - it's more nuanced than that - but OK by the crudest approximation.

Quote
At the moment i know: In the 1st group, hydrogen is 1s¹ and helium is 1s².

The 2nd group all have 1s² plus up to one 2s orbital and three 2p orbitals. (This means the 2nd group has 8 electron spaces because one orbital can only allow 2 electrons.)

I know the 3rd group has the same orbitals as the 2nd group plus a d orbital and that it can allow 10 electrons. That's about it though.

That is probably really hard to understand in the way I phrased it, but I tried.
Not seeing a question here. Are you just looking for confirmation? This is basically OK for ground state configurations, but your language is pretty loose.
Title: Re: Electron Configurations?
Post by: Babcock_Hall on July 12, 2021, 01:00:13 PM: I might have used "second row elements" in place of "second group." I am not sure I would have said "up to one 2s"