Consider an electron for a hydrogen atom in an excited state. The maximum wavelength of electromagnetic radiation that can completely remove (ionize) the electron from the H atom is 1460 nm. What is the initial excited state for the electron (n = ?)?
I think i should use the equation: E = -2.178 X 10-18 J (Z2/n2)
but i am not sure how to find Z or n. Should Z be 1? Or do I need to use another equation because i need to be finding n?