2.3.63 - Atomic line spectra and energy levels

Understand atomic line spectra in terms of transitions between discrete energy levels and understand how to calculate the frequency of radiation that could be emitted or absorbed in a transition between energy levels.

Use - atomic line spectra and energy levels to connect the rule to the data and decision in the question.

This matters because - atomic line spectra and energy levels determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - atomic line spectra and energy levels to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Atomic line spectra and energy levels is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.