A hydrogen-like atom (described by the Bohr model) is observed to emit ten wavelengths, originating from all possible transitions between a group of levels. These levels have energies between −0.85eV and −0.544eV (including both values).
(a) Find the atomic number of the atom.
(b) Calculate the smallest wavelength emitted in these transitions. (Take the ground-state energy of the hydrogen atom as −13.6eV.)