Excited State vs. Ground State. e-e- e-e- Ground state Excited state Electrons can only be at specific energy levels, NOT between levels.

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Presentation transcript:

Excited State vs. Ground State

e-e- e-e- Ground state Excited state Electrons can only be at specific energy levels, NOT between levels.

Color = Energy of Photons Zumdahl, Zumdahl, DeCoste, World of Chemistry  2002, page 329

Energy Level Zumdahl, Zumdahl, DeCoste, World of Chemistry  2002, page 329 A B CD Ground state Energy Four excited states

An Excited Lithium Atom Zumdahl, Zumdahl, DeCoste, World of Chemistry  2002, page 326 Photon of red light emitted Li atom in lower energy state Excited Li atom Energy

An Excited Lithium Atom Zumdahl, Zumdahl, DeCoste, World of Chemistry  2002, page 326 Photon of red light emitted Li atom in lower energy state Excited Li atom Energy

Excitation of Hydrogen Atoms Zumdahl, Zumdahl, DeCoste, World of Chemistry  2002, page 328

Return to Ground State

Frequency A Frequency B Frequency C n = 2 n = 1 n = 3

Frequency A Frequency B Frequency C n = 2 n = 1 n = 3 A B C A + B = C