Chemistry problem...help

Question

What is the wavelength of the photon emitted when a hydrogen atom goes from the third energy level to the first energy level?

Answer 1

http://mooni.fccj.org/~ethall/rydberg/ry...

91.1nm/ wavelength = [1/m2 - 1/n2]

n = shell returning from

m = shell returning to

wavelength = 91.0 nanometres / [1/m2 - 1/n2]

wavelength = 91.0 nanometres / [1/(1)2 - 1/(3)2]

wavelength = 91.0 nanometres / [1 - 0.111]

wavelength = 91.0 nanometres / [0.889]

your answer is: 102 nanometres