SPECTROSCOPY:
QUALITATIVE ANALYSIS WITH LIGHT
Waves, Light, and Atomic Spectra
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Cadmium
Hydrogen
Zinc
Helium
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535
361
468
480
509
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397
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434
486
656
384
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472
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610
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Hydrogen Spectral Lines predicted by Bohr’s
planetary electron model for electron jumps ending on
orbit two.
Electron
transition
Wavelength of
emitted light
Color of emitted
light.
3
4
5
6
656.4 nm
486.3 nm
_______nm
_______nm
Red
Blue-Green
Violet
Violet (difficult to see)
2
2
2
2
Table 5 Electron transitions, wavelengths, and colors of hydrogen
spectral lines predicted by Bohr’s planetary electron model. The
wavelengths predicted for the 5->2 and 6 -> 2 electron transitions are not
included in this table. They are left for you to compute.
LABORATORY REPORT
Your report should include your data and conclusions derived for each of the experimental topics. Be sure to include your
spectra chart, your mercury calibration graph, and the measurements you made on the unknown colored slides.