• Support PF! Buy your school textbooks, materials and every day products Here!

Specific parts of the emission spectrum of a sodium lamp

  • #1

Homework Statement


Part a) The emission spectrum for Sodium lamp contains a reasonably bright red line in its spectrum. What is its origin?

Part b) The possible transitions between electron energy levels for Sodium were analysed. There were no transitions between the s series (s subshell) and d series (d subshell). Why is that?


Homework Equations


None really.


The Attempt at a Solution



Part a) I analysed the diffuse d series and this red line isn't in it. I also analysed the origin of the famous yellow doublet but that really isn't overly relevent. I've done a heap of browsing the web and books and am yet to find anything at all. Most sources simply talk about the yellow doublet

Part b) As I said, I analysed the diffuse d series but these are all transitions between d orbitals and the 3p energy level. I'm thinking something along the lines of not conserving angular momentum or spin or something would prevent transitions between d and s series but I'm really not sure. As with Part a), the web and books have been useless so far so this is a bit of a last resort.

Thank you kindly in advance.
 

Answers and Replies

  • #2
I found a database with all known wavelengths but I have no real idea of where the red wavelength is so it's so hard to tell.
 
  • #3
For part b) I was told it's not to do with conservation of spin. Conservation of angular momentum perhaps?
 

Related Threads for: Specific parts of the emission spectrum of a sodium lamp

Replies
2
Views
5K
  • Last Post
Replies
0
Views
5K
  • Last Post
Replies
4
Views
2K
Replies
4
Views
2K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
5
Views
5K
  • Last Post
Replies
4
Views
3K
Top