For your work in a mass spectrometry lab, you are investigating the absorption spectrum of one-electron ions. To main- tain the atoms in an ionized state, you hold them at low density in an ion trap, a device that uses a configuration of electric fields to con- fine ions. The majority of the ions are in their ground state, so that is the initial state for the absorption transitions that you observe. (a) If the longest wavelength that you observe in the absorption spectrum is 13.56 nm, what is the atomic number Z for the ions? (b) What is the next shorter wavelength that the ions will absorb? (c) When one of the ions absorbs a photon of wavelength 6.78 nm, a free elec- tron is produced. What is the kinetic energy (in electron volts) of the electron?

For your work in a mass spectrometry lab, you are investigating the absorption spectrum of one-electron ions. To main- tain the atoms in an ionized state, you hold them at low density in an ion trap, a device that uses a configuration of electric fields to con- fine ions. The majority of the ions are in their ground state, so that is the initial state for the absorption transitions that you observe. (a) If the longest wavelength that you observe in the absorption spectrum is 13.56 nm, what is the atomic number Z for the ions? (b) What is the next shorter wavelength that the ions will absorb? (c) When one of the ions absorbs a photon of wavelength 6.78 nm, a free elec- tron is produced. What is the kinetic energy (in electron volts) of the electron?