Chapter 5: The Modern Atomic Model

The 20th century was filled with accomplishments in scientific understanding. One of the greatest accomplishments was the development of the quantum mechanical model. Chapter 5 traces the discoveries that led to the model and the describes the relationship between the electronic structure of atoms and the properties of elements.
 

Lesson 1: Bohr and Beyond

• Part a: Emission Spectrum of the Elements
• Part b: Wave-Particle Duality
• Part c: Bohr's Quantized Energy Levels
• Part d: de Broglie's Electron Waves
• Part e: Heisenberg's Uncertainty Principle

 

Lesson 2: The Quantum Mechanical Model

• Part a: Schrodinger's Wave Mechanical Model
• Part b: Orbitals
• Part c: Energy Levels
• Part d: Quantum Numbers

 

Lesson 3: Electronic Structure of Atoms

• Part a: Electron Configurations
• Part b: Orbital Diagrams
• Part c: Electrons and the Periodic Table
• Part d: Exceptions to the Rule

 

Lesson 4: The Periodic Table and the Atom

• Part a: The Periodic Law Revisited
• Part b: Atomic Size
• Part c: Ionization Energy
• Part d: Electronegativity
• Part e: Ion Formation