1. A hydrogen atom is in the ground state. What frequency photon is required to knock the electron to the n=4 orbital? b) If the electron in H decays to the n=2 level from the n=4 level, what wavelength photon would be emitted? Can you see this photon? c) The Lyman series for the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number n=1. What is the longest wavelength photon in this series?

1. A hydrogen atom is in the ground state. What frequency photon is required to knock the electron to the n=4 orbital? b) If the electron in H decays to the n=2 level from the n=4 level, what wavelength photon would be emitted? Can you see this photon? c) The Lyman series for the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number n=1. What is the longest wavelength photon in this series?