1. The problem statement, all variables and given/known data Compute to three significant figures the wavelength of the sixth line in the hydrogen Balmer series. 2. Relevant equations 1 / lambda = R * ( 1/ n_final^2 - 1 / n_initial^2 ) R = Rydberg constant = 10973731.57 m^-1 lambda = wavelength 3. The attempt at a solution I set up the Balmer formula I listed above given the info in the problem 1 / lambda = (10973731.57 m^-1) * ( 1/ 2^2 - 1 / 6^2 ) = 1 / 2438607.015555 m^-1 so, lambda = 410.070 nm or 4.10 x 10^-7 m using 3 sig figs as the question asks for. Not sure what I am doing wrong. This seems right to me, but it is not. Any help is appreciated.