Question

When an electron in a certain excited energy level in a one-dimensional box of length 2.00 Å makes a transition to the ground state, a photon of wavelength 8.79 nm is emitted. Find the quantum number of the initial state?​

Answer 1

Calculate the wavelength associated with an electron with energy 2000 eV.

Sol: E = 2000 eV = 2000 × 1.6 × 10–19 J