3d and 4s

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katietietsworth_3c
Posts: 31
Joined: Fri Sep 28, 2018 12:24 am

3d and 4s

Postby katietietsworth_3c » Fri Oct 26, 2018 1:00 pm

Hi, I was wondering why the 3d and 4s orbitals are on the same row of the periodic table. That whole thing is confusing to me does anyone know why that happens?

Adriana_4F
Posts: 74
Joined: Fri Sep 28, 2018 12:29 am

Re: 3d and 4s

Postby Adriana_4F » Fri Oct 26, 2018 1:23 pm

I think the reason why is because the periodic table was created before orbitals were even discovered. The periodic table is organized in such a way that elements are grouped with other elements because of how similar in reactivity they are (ex: alkaline metals, noble gases, etc.). If you need more help on 4s and 3d orbitals, I found a website that has some good info on it: https://www.chemguide.co.uk/atoms/prope ... oblem.html
I hope this helps :)

Rachana Jayaraman 1H
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

Re: 3d and 4s

Postby Rachana Jayaraman 1H » Fri Oct 26, 2018 9:13 pm

While it was organized before the orbits were discovered, the 4s orbital is filled before the 3d orbital, so elements that have electrons in the 3d orbitals have more protons, thus a higher atomic number, than elements with electrons in only the 4s orbital.


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