Unit 3 - Atomic Structure

This unit delves into the nature of atoms—covering quantum models, electron configurations, and the periodic trends that arise from them. Students explore the electromagnetic spectrum, examine atomic emission and absorption spectra, and learn how these phenomena support modern atomic theory. Core learning outcomes include describing frequency, wavelength, and energy of electromagnetic radiation; explaining atomic models and the role of electrons in atoms; using quantum numbers and orbital diagrams; and applying periodic law to predict element properties. Instruction emphasizes the historical development of ideas, use of models, and connections between theory and experimental evidence.