Chapter 4 - Atomic Structure

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Presentation transcript:

Chapter 4 - Atomic Structure Notes on 4.1 - 4.3

Atoms

History of the Atom

The discovery of the electron…

J.J. Thomson’s Model

Rutherford and the nucleus

Parts of an Atom

Parts of an Atom: Particle charge mass location Proton Neutron Electron

Quarks

Atomic Number

Mass Number

Atomic Mass Units

Mass of an Atom

Isotopes

Isotopes of Hydrogen Hydrogen-1 Hydrogen-2 Hydrogen-3 mass = 1 Hydrogen has three isotopes: Hydrogen-1 Hydrogen-2 Hydrogen-3 Hydrogen-1 Hydrogen-2 Hydrogen-3 mass = 1 1 proton 0 neutrons Atomic # =1 Atomic # =

Bohr Model vs. Rutherford Model

What is an energy level?

Energy Levels and the Atom Energy Level Diagram

Important Energy Level Rules Potassium - 19 total electrons 1 level - 2 3rd level - 8 2nd level - 8 4th level - 1

The Electron Cloud Model

Atomic Orbitals

Can we see atoms?

STM Images of an Atom