Download Chapter 4 Guided Notes

Chapter 11: Modern Atomic Theory
Section 11.1 Rutherfords Atom
Rutherford Identified:
Electrons –Rutherford Suggested
Section 11.2 Energy and Light
Electromagnetic Radiation
Examples of electromagnetic radiation
Travels in:
Have Different:
Wavelength
Different wavelengths of electromagnetic radiation carry different:
Photons:
Light as a stream of Photons
Light as a wave
Frequency
Speed
Section 11.3: Emission of Energy by Atoms:
Atoms release energy
“excited atoms”
How do you see this?
What can be different?
High-energy photons correspond with:
Low-energy photons correspond with:
Section 11.4: The Energy Levels of Hydrogen
Quantized:
Hydrogen must have ______________________________
What do we know about energy levels of all atoms?
Section 11.5 The Bohr Model of the Atom
Bohrs Model of the Atom included:
What do we know now about the Bohr Model?
11.6 The Wave Mechanical Model of the Atom
Schrodinger:
Wave Mechanical Mdoel:
Orbitals
Electron path:
11.7 The Hydrogen Orbitals
Probability of finding the electron:
Hydrogen Energy Levels
Principal Energy Levels
Two sub-levels
Orbital Labels --Remember
1. The number tells the principal energy level
2. The letter tells the shape. The letter s means a spherical orbital; the letter p means a
two-lobed orbital. The x,y, or z subscript on a p orbital label tells along which of the
coordinate axes the two lobes lie.
Hydrogen Orbitals
Electron can occupy:
Ground State:
11.8 The Wave Mechanical Model: Further Development
What is important about electron spins?
Pauli Exclusion Principle:
11.9 Electron Arrangements in the First 18 Atoms on the Periodic Table
Element
H
He
Li
Be
B
C
N
O
F
Ne
Electron Configuration
Z=
Box diagram
Orbital/Box Diagram
Valence Electrons
Core Electrons
Elements in groups:
11.10 Electron Configuration and the Periodic Table
Elements after #18
Summary of the Wave Mechanical Model and Valence Electron Configuration
Valence Electron Configuration (i.e Alkali Earth)
Main group Elements/Representative Elements
11.11 Atomic Properties and the Periodic Table
Metals and Nonmetals
Metals
Nonmetals
Metalloids
Atomic Size
Decreases when:
Ionization Energies:
Metals have:
Nonmetals have:
Elements on Periodic Table