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Homework answers / question archive / An unknown element X absorbs a photon with an energy of 3
An unknown element X absorbs a photon with an energy of 3.313 × 10-19 J.
a. (2 points) Calculate the frequency of this photon. Show all of your work and units to receive full credit.
b. (3 points) Calculate the wavelength of the photon in nanometers. Show all of your work and units to receive full credit.
c. (1 point) Use a dark, vertical line to mark that wavelength on the visible spectrum below. (Make sure that it is easy for the grader to see your mark. If you cannot draw on this image electronically, draw on a piece of paper, take a picture, and insert your picture into the document you submit.)
d. (1 point) Do you expect this wavelength to appear as a black line on a colored background or a colored line on a black background? (Reread the initial question if you have forgotten which process is occurring.)
e. (5 points) In the space below, construct an energy level diagram to show the process that causes the line to appear in the absorption spectrum. Label all of the components of your diagram to receive full credit.
f. (2 points) In words, describe what is happening at the atomic level during the absorption process. Include any cause or consequence of the process.
g. (2 points) Element X also absorbs light with a wavelength of 400 nm. Draw a second energy level diagram to show the process that causes the line at 400 nm to appear in the absorption spectrum. Label all of the components of your diagram to receive full credit.
h. (2 points) Describe any difference(s) in your energy diagrams from parts e and g and explain why each difference exists.
