Knowledge of the Bohr model of the atom.
Knowledge of the terms ground state, energy levels, ionisation and zero potential energy in relation to the Bohr model of the atom.
Knowledge of the mechanism of production of line emission spectra, continuous emission spectra and absorption spectra in terms of electron energy level transitions.
Knowledge that the absorption lines (Fraunhofer lines) in the spectrum of sunlight provide evidence for the composition of the Sun’s outer atmosphere.
Use of appropriate relationships to solve problems involving energy levels and the frequency of the radiation emitted/absorbed.