Quantum physics- atomic states

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Homework Help Overview

The discussion revolves around the identification and designation of atomic states in quantum physics, specifically focusing on singlet, doublet, triplet, and quartet S, P, and D states. Participants are exploring the notation and values associated with angular momentum and multiplicity in this context.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants express confusion regarding the question's requirements, particularly about the values for angular momentum and multiplicity. There are inquiries about the spectral notation and whether all combinations of electron spins need to be considered.

Discussion Status

Some participants are attempting to clarify the notation and the values that multiplicity can take, while others are sharing interpretations of the question. There is no explicit consensus on how to proceed, but guidance is being offered regarding the understanding of terms and notation.

Contextual Notes

Participants mention the maximum number of valence electrons and the implications of electron spin, indicating a need for further clarification on these foundational concepts.

brad sue
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Homework Statement



Give the full designation (e.g. 3P0) for all possible singlet, doublet, triplet and quartet S, P and D atomic states.

The Attempt at a Solution


I don't understand this question at all!

Up to which values does the angular momentum (supscript) and multiplicity (subcript) go?
please can you provide me with some explanation and a little example?

I continue reading and update if i have some clarifications.
Thank you
 
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Sorry, I'm a bit unsure of what part is holding you back. Are you getting tripped up on the spectral notation?
 
Mindscrape said:
Sorry, I'm a bit unsure of what part is holding you back. Are you getting tripped up on the spectral notation?

I think I get the notation. The main issue is what values for example the multiplicity can take? The maximum number of valence electrons is 8 i believe. and each electron can spin up or down. do i need to enumerate all combinations electron spin! this is a lot and I am not sure this the the correct anwer...

Can you clarify what i need to do?
 
I can't say for sure, but my impression as an outsider (not being in your class and knowing what you are studying) is that it just wants the spectral notation for all the singlets, doublets, triplets, and quartets.

A term with S=0 is a singlet term; S=1/2 is a doublet term; S=1 is a triplet term; S=3/2 is a quartet term; etc.
[tex]N^{2S+1}L_J[/tex]

(I guess you are omitting the N here.)

Dunno, I could be wrong, but this is my interpretation. The multiplicity is given by 2S+1, but I don't know if you have to list off all of them. Maybe you do. Shouldn't take too long as it's relatively straightforward.
 

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