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# Notes on Electromagnetic Waves and Energy Levels **Constants and Variables:** * C = speed of light (3.0 x 108 m/s) * λ = wavelength (meters) * f = frequency (Hz) * E = energy (J) * H̄ = Planck's constant (6.63 x 10-34 J⋅s) **Atomic Structure:** * Core E = 2 * Valence e = 6 (group 16) **Energy...

# Notes on Electromagnetic Waves and Energy Levels **Constants and Variables:** * C = speed of light (3.0 x 108 m/s) * λ = wavelength (meters) * f = frequency (Hz) * E = energy (J) * H̄ = Planck's constant (6.63 x 10-34 J⋅s) **Atomic Structure:** * Core E = 2 * Valence e = 6 (group 16) **Energy Transitions:** * A and D release energy because electrons transition from an excited state to a ground state release energy * A has the lowest wavelength because it has higher energy * Distance from nucleus increases, attraction decreases **Diagram:** The notes include a hand-drawn diagram of atomic electron shells (energy levels). The diagram shows electron shells of varying radii around a nucleus. Arrows indicate transitions between these shells, supposedly illustrating the release of energy when electrons drop to lower energy levels. It's not a sophisticated diagram, and shell numbers or labels are missing.