An electron transitioning from a higher energy level down to the first energy level in a hydrogen atom emits light with a wavelength of 103 nm. Determine the energy level the electron started from before moving down to the first energy level.
Can someone explain how id do this ?
- NCSLv 74 months agoFavorite Answer
You can find the energy of the emitted photon with
E = hc / λ
I get E = 1.93-18 J = 12.1 eV
Then by Rydberg
E = 13.6eV * (1/1² - 1/n²)
Set them equal and solve for n.
I get n = 3
If you find this helpful, please select Favorite Answer!