UTF-8A spectrosopy challenge255255204
This model has a new type of atom -- a green atom -- with a new energy level diagram. This time, the energy level diagram is editable. If you click on any line to select it, you can then drag it up and down.The numbers to the left tell you the energy of that level in electron-volts. (Never mind about the units for now -- just remember that the bigger the number, the higher the energy.) [Note: I understand why the numbers are all negative, but for pedagogical purposes I'd add 4 eV to them to make them to make them all positive. This would have a number of advantages: it would make it much easier to figure out the differences, bigger numbers would correspond to higher energies, and the zero point is arbitrary in any case.]
The way the energy levels are set up now, none of the photons are visible. The transitions from the two excited states to the ground state produce ultraviolet photons and the transition between the excited states gives off an infrared photon. Without adding any additional energy levels, just by changing one or more of the existing levels, see if you can make these atoms radiate a blue photon and a red one. When you've done it, take a snapshot of the spectrum to prove it.
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<b><font size="5" face="Trebuchet MS">A spectrosopy challenge</font></b>
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</html>-243f9a75751575.075.01515true1515Wide Latin75.075.015Wide Latin75.075.01575.075.01575.0175.0org.concord.mw2d.activity.AtomContainerpage6$0.mmlorg.concord.modeler.PageElectronicStructureViewer01Energy levels (EDITABLE)-4.00.040200270-ff0100-3475.0175.075.075.075.0175.075.0175.075.0175.0org.concord.modeler.PagePhotonSpectrometer00.020.0204005075.0175.01575.0175.0org.concord.modeler.PageTextArea400200<html>
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<title>Did you notice that when you have a blue spectral line and a red one, the third line is invisible? Do think it is possible to make an atom with three energy levels that gives off three different visible photons? Why, or why not?</title>
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Did you notice that when you have a blue spectral line and a red one, the
third line is invisible? Do think it is possible to make an atom with
three energy levels that gives off three different visible photons? Why,
or why not?
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