1. The problem statement, all variables and given/known data -A beam of electrons bombards a sample of hydrogen in its ground state. a) Through what minimum potental difference must the electrons be accelerated if only one line of the Balmer's series can be observed? 2. Relevant equations V= h^2/2meλ^2 (V=potential difference) 1/λ=R((1/n(i)^2)-(1/n(f)^2)) 3. The attempt at a solution ......1/(1.09*10^7((1/2^2)-(1/3^2)))=λ, λ=6.60*10^-7 V= h^2/2meλ^2 .....((6.626*10^-34)^2/((2*(9.11*10^-31)(1.6*10^-19)(6.60*10^-7)^2))= 3*10^-6 volts This is a question I got wrong on a previous homework and I am still trying to figure out how to correctly figure this out. I just am unsure if I am even doing this correctly and I have tried this in quite a few ways.