A change in energy, E, corresponds to the final energy state minus the initial energy state, or: E = final – initial = 1 – 2 = -1312.04 (-328.01) = -984.03 kJ/mol If your calculated value of E is about 984.03 kJ/mol, then your nhi would be 2 (the higher value of n) and your nlow value would be 1 (the lower value of n). When Balmer found his famous series for hydrogen in 1886, he was limited experimentally to wavelengths in the visible and near ultraviolet regions from 250 nm to 700 nm, as in your experiment. What common characteristic do the lines in the Balmer series have?