Question

Photons of light with a wavelength of 122 nm are being directed through a chamber of hydrogen gas atoms. The gas atoms began in their ground state (ni=1) and, after interacting with these photons, some move to (ni=2).

Which of the following statements is true?
Hint: It might be helpful to reference the tables on pages 90-92 of the lab manual.
A. If photons with a slightly shorter wavelength had been used, such as 118 nm, more electrons would have moved to n=2.
B. Photons will eventually be emitted and their wavelength will also be 122 nm.
C. If photons with a slightly longer wavelength had been used, such as 128 nm, more electrons would have moved to n=2.
D. The electrons are now "trapped" in the n=2 electronic energy level and will stay there.

Answer 1

Answer: Photons will eventually be emitted, and their wavelength will also be 122 nm.

Explanation: We know it requires a lot of energy to go to orbital 2. 122 nm is based on the variation 2--->1, making option B correct.