Problem 1.34

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TiffanyDinh1C
Posts: 10
Joined: Fri Sep 25, 2015 3:00 am

Problem 1.34

Postby TiffanyDinh1C » Sun Oct 11, 2015 9:32 pm

What is the highest energy photon that can be absorbed by a ground-state hydrogen atom without causing ionization?
Help would be greatly appreciated!

Matthew Gutierrez 2D
Posts: 19
Joined: Fri Sep 25, 2015 3:00 am

Re: Problem 1.34

Postby Matthew Gutierrez 2D » Sun Oct 11, 2015 10:13 pm

The equation for finding the kinetic energy of an ejected electron is:



(pg. 13)

Because the question is asking for the maximum energy of a photon needed, without ionizing the atom, you can set the left side of the equation equal to 0 because you do not want the electron ejected with any velocity or kinetic energy. Then from there you could calculate the energy of a photon (hv) if you have the work function .
Sorry if I am unclear or if I have missed a step.


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