chemistry
posted by delany .
Hi there, I need a little help starting this one.
Calculate the energy in joules needed to remove one electron in the n=1 state from a hydrogen atom.
I feel like i should apply the
wavelength = Nhc/deltaE but I have no idea how to apply this to hydrogen.
I appreciate your time!

Energy required to move an electron from one energy level to another is
delta E = E2E1 = 2.180 x 10^18/hc x (1/N1^2  1/N2^2) where N1 < N2.
So plug in N = 1 for N1 and infinity for N2 (since you want to remove the electron completely). That will make the 1/N2^2 part zero. Can you take it from there.