1D. 25

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Anil Chaganti 3L
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Joined: Wed Sep 30, 2020 9:52 pm

1D. 25

Postby Anil Chaganti 3L » Thu Oct 29, 2020 8:19 pm

Hi,
I was working on the quantum numbers section and I was confused on this question:
1D.25 Which of the following subshells cannot exist in an atom:
(a) 2d; (b) 4d; (c) 4g; (d) 6f?
When do subshells not exist?

JonathanSung_2G
Posts: 65
Joined: Wed Sep 30, 2020 9:49 pm

Re: 1D. 25

Postby JonathanSung_2G » Thu Oct 29, 2020 8:27 pm

Hi! Certain subshells do not exist because sometimes the energy level does not correspond to the angular momentum. 2d cannot exist because d orbitals only exist when the principle quantum number n is at least 3. g orbitals can only exist when the principle quantum number n is at least 5. Thus (a) and (c) are subshells that do not exist.

Aliya 1H
Posts: 74
Joined: Wed Sep 30, 2020 9:34 pm

Re: 1D. 25

Postby Aliya 1H » Thu Oct 29, 2020 8:28 pm

Hi! There is no 2d subshell because there are only electrons in s and p at the second energy level.
For the rest of them:
We know that there is a 4d subshell.There are no known elements that have a g shell occupied, but I think that doesn't mean that there CANT hypothetically be something with g occupied. In regards to 6f, I found a previous post from chem community 2011 viewtopic.php?t=960


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