Finding the Mystery gas questions

  • Context: Graduate 
  • Thread starter Thread starter MonsieurWise
  • Start date Start date
  • Tags Tags
    Gas Mystery
Click For Summary
SUMMARY

The discussion centers on using Bohr's theory and the Rydberg constant to identify a mystery gas by analyzing its spectral lines. The formula 1/λ=RZ²(1/n_i² - 1/n_f²) is employed, with the user seeking to determine the appropriate quantum numbers n_i and n_f for accurate results. The user expresses uncertainty about the applicability of this method to various gases, particularly whether it is limited to electron-like atoms such as singly ionized Helium (He+). The spectral line energies for ionized helium are noted, specifically the transition from 2p to 1s, which corresponds to 40.8 eV.

PREREQUISITES
  • Understanding of Bohr's theory and its application to atomic spectra
  • Familiarity with the Rydberg constant and its significance in spectroscopy
  • Knowledge of quantum numbers and electron transitions in atoms
  • Basic principles of spectroscopy and wavelength measurement
NEXT STEPS
  • Research the spectral lines of singly ionized Helium (He+) and their corresponding transitions
  • Explore advanced spectroscopy techniques for identifying unknown gases
  • Study the implications of Bohr's model for multi-electron atoms
  • Investigate the limitations of Bohr's theory in modern atomic physics
USEFUL FOR

Students and researchers in physics, particularly those focusing on atomic spectroscopy, quantum mechanics, and the identification of gases through spectral analysis.

MonsieurWise
Messages
53
Reaction score
0
I'm doing an experiment of the Bohr's theory and the Rydberg constant. I want to find the element of a mystery gas using the derivation of the Bohr's theory:
1/λ=RZ^2 (1/〖n_i〗^2 -1/〖n_f〗^2 )
I think if I have the wavelength lambda, all I need to do is guessing a right series of n_i and n_f till it gets me a straight line.
My problem is I'm not sure that this way can actually work with any gas (Helium for example), or only work with "electron-like" atoms (Singly ionized Helium for example). And I can't find any "Singly ionized Helium spectrum" on the internet. There's only Helium spectrum...
Could someone help me...?
Thank you very much in advance...
 
Physics news on Phys.org
The spectral line energies of ionized helium are usually shown as a line of He+ (meaning ionized helium) vs. He (for unionized helium) in tables. The most dominant lines are probably 2p -> 1s (n=2 to n=1) transitions, which are about 4 x 3/4 x 13.6 eV = 40.8 eV (304 Angstroms).
 
Thanks ^^
 

Similar threads

Undergrad Determining the Number of Points in the n-Space
  • · Replies 16 ·
Replies
16
Views
2K
Graduate Learning DFT: Inhomogeneous Electron Gas (Hohenberg) Question
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What's meant by D dimensional gas?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Hard-Core Boson Model in K space
  • · Replies 0 ·
Replies
0
Views
2K
How Much Energy is Released When a Uranium Nucleus Captures an Electron?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Helmholtz entropy of ideal gas mixture is additive?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Advice needed for science project.
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Clarification required for some equations in the formulation of ideal Bose gas
  • · Replies 2 ·
Replies
2
Views
6K
Undergrad Is the magnetic moment of a hydrogen atom not equal to Bohr's magneton?
  • · Replies 22 ·
Replies
22
Views
3K
Undergrad Question About Ideal Gas and Average Free Movement of Molecules
  • · Replies 69 ·
3
Replies
69
Views
8K