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Atomic Spectra. Continuous Spectra. The (Visible) Hydrogen Spectrum. Other Spectra. Notes on the Procedure. Do steps 3-5 in part A Measure at least 3 of the 4 hydrogen lines (the deep purple one may be really hard to see) In report, give % errors for the measured hydrogen lines.

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notes on the procedure
Notes on the Procedure
  • Do steps 3-5 in part A
    • Measure at least 3 of the 4 hydrogen lines (the deep purple one may be really hard to see)
    • In report, give % errors for the measured hydrogen lines.
    • Measure at least 4 of the helium lines
    • Observe the other elements (don’t have to measure the wavelengths)
  • Ignore all of part B and data sheet B
  • For part C
    • Your graph should look similar to figure 3, except to scale
    • Use your own graph paper
    • Be sure to include the 1216 Angstrom line
    • You can set the y=0 line as the n=1 (ground state) energy level
qualitative observations of other elements
Qualitative Observations of Other Elements
  • How does the number of lines change with the atomic number (periodic table might help)?
  • How does the spacing of the lines change with atomic number?
  • Any noticeable relation between the brightness and colors of individual emission lines and the blended light emitted by the element?
    • Try to explain why these trends happen (you don’t have to be right, just try and give me some logical explanation).
  • Observe hydrogen, deuterium (hydrogen with an extra neutron), and water. Discuss similarities and differences in their spectra, and why these might occur.
  • Feel free to discuss and other interesting features you see.
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