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**How many wavelengths are represented in each figure below?**

Waves: A Warm up

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**The Electromagnetic Spectrum**

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**The Periodic Table 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 5d 6p 7s 6d 7p**

4f 5f

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**The Quantum Model Part II**

Energy as wave and particle

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**De Broglie Small matter (electrons) have wavelike properties as well.**

Any moving particle has a wavelength Changed the Bohr model so that all elements could be explained according to their frequencies of energy.

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De Broglie Essentially the model went from de Broglie Bohr to

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**Schrodinger (and his cat)**

A thought experiment Simultaneous existence

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**Heisenberg Uncertainty Principle**

An electron’s location and speed cannot be determined at the same time. If we cause change to find one variable, we are no longer looking at the actual e- situation. So quantum mechanics can tell us the probability that an electron is somewhere, but it does not tell us how it got there.

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Quantum Theory and the Electronic Structure of Atoms Chapter 7 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Quantum Theory and the Electronic Structure of Atoms Chapter 7 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

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