To Do Quiz #4 next Wednesday (3/16).

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Presentation transcript:

To Do Quiz #4 next Wednesday (3/16). 6th HW assignment due Wednesday, March 16, by 10 pm. Exam 2: Thursday, March 17, 7:00 pm

Wave-Particle Duality

Average atom (not to scale)

A First Attempt: WRONG!

A Change Between Two Discrete Energy Levels Emits a Photon of Light

Electromagnetic Spectrum

Wrong Model Gets it Right! Water vs liquid nitrogen

Interference of Waves

Big Ideas – Waves Waves interfere with one another. Constructive interference: adding Destructive interference: canceling The higher the energy, the more complex. Waves are a measure of probability. Not obvious. Controversial when introduced.

Electrons Electrons are most likely to be found near the nucleus Electrons could be any distance (very far even) We do not know how the electron moves ORBITALS = regions of 90% probability

The probability distribution for a hydrogen 1s orbital

Radial Probability Distribution (1s)

Representation of p orbitals

Representation of d orbitals

Representation of f orbitals

Orbital Energy Levels for the Hydrogen Atom

Quantum Numbers