An Energy of 13

question 45

Multiple Choice

An energy of 13.6 eV is needed to ionize an electron from the ground state of a hydrogen atom. Selecting the longest wavelength that will work from the those given below, what wavelength is needed if a photon accomplishes this task?

• A) 60 nm
• B) 80 nm
• C) 70 nm
• D) 90 nm
• E) 40 nm