1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Hydrogen Atom

  1. Nov 17, 2009 #1
    1. The problem statement, all variables and given/known data

    When a hydrogen atom undergoes a transition from the n=2 state to the n=1 level, a photon
    with [tex]\lambda[/tex]=122nm is emitted.

    a)If the atom is modeled as an electron in a one-dimensional box, what is the width of the box in order for the n=2 to n=1 transition to correspond to emission of a photon of this energy?

    2. Relevant equations

    3. The attempt at a solution

    Do not know what equations to use to solve this problem
  2. jcsd
  3. Nov 17, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    What is the expression that gives the energies of a particle in a one-dimensional box? Start from there. Match the energy difference from n =2 to n = 1 to the energy of the 122 nm photon.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook