Excited vs Ground State Atom

Contributed by:

Jonathan James Mon, Jan 17, 2022 07:25 PM UTC

The highlights are:
1. Color = Energy of photons
2. Energy levels
3. An excited lithium-ion
4. Excitation of Hydrogen atoms
5. Return to ground state

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

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

3. Energy Level
D
C
B
Four
excited
states
Energy
A
Ground state
Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 329

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

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

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

7. Return to Ground State

8. Frequency A
Frequency B
Frequency C
A C
B
A + B = C

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