The electron from a hydrogen atom drops from an excited state into the ground state.?
How much energy does the electron have initially in the n=4 excited state?
Express your answer with the appropriate units.
- Steve4PhysicsLv 710 months agoFavorite Answer
The n-th energy level is Eₙ = 13.6/n² (in units of electron-volts), eV)
So the 4-th level has energy E₄ = -13.6/4² = 0.85 eV
‘suitable units’ could also mean joules, in which case:
E₄ = 0.85 * 1.6*10^-19 = -1.36*10^-19 J
Note, the image in the question is irrelevant. Maybe it’s something to do with Part B which you haven’t included?