The ionization energy of a certain element is
Chapter 7, Problem 7.127(choose chapter or problem)
The ionization energy of a certain element is 412 kJ/mol (see 7.125). However, when the atoms of this element are in the first excited state, the ionization energy is only 126 kJ/mol. Based on this information, calculate the wavelength of light emitted in a transition from the first excited state to the ground state
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