A photon is emitted when a hydrogen atom undergoes a transition from the n $=9$ state to the n $=3$ state. Calculate values for the following.

$($a$)$ the wavelength

Your response differs from the correct answer by more than $10\%.$ Double check your calculations. nm

$($b$)$ the frequency

Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. Hz

$($c$)$ the energy of the emitted photon

The response you submitted has the wrong sign. eV