1. The problem statement, all variables and given/known data Note: Questions is targeted at Balmer series only (ie, shell 6 --> 2 ) Given the Rydberg formula, 1[tex]/[/tex][tex]\lambda[/tex]=R[1[tex]/[/tex](nf)2-1[tex]/[/tex](ni)2], describe a way of using a graphical method to determine the value of R. Where nf=final shell (should always be 2 for Balmer series) ni= initial shell (any shell from 6-->3) [tex]\lambda[/tex]=Wavelength R=Rydberg's constant 2. Relevant equations Umm, I gave it above. 3. The attempt at a solution I'm not sure...I understand the formula, I've done questions relating on the use of the formula, I have a good knowledge of the Balmer Series (as in Shell 3 --> 2 is given H[tex]\alpha[/tex], then 4-2 beta, etc), I know the empirical value of Rydberg's constant, but sadly I am completely stumped on how to do this. I'm pretty sure that this is done using gradients, but do not know what represents the Y and X values on the graph. Help will be much appreciated.