Course Icon


Chapter 6: Sections 6-7

SO Icon


Electron Quantum Mechanics

Chapter 6: 6-7 Homework

Reading Preparation

Textbook assignment: Read Kotz and Triechel, Chemistry and Chemical Reactivity Chapter 6 Sections 6 to 7.

Study Notes

6.6 The angular momentum quantum number l is related to the shapes s, p, d, and f of the orbital.

6.7 The direction of electron spin determines the net magnetic properties of the atom.

Atomic orbitals determine how electrons form bonds between atoms. The energy required to move atoms close together is controlled by the number of electrons and their position relative to their "home" atom nucleus and the nuclei of the bonding atoms.

There are no equations for these sections.

Web Lecture

Read the following weblecture before chat: Quantum Numbers and Orbitals

Study Activity

Videos for Chapter 6: The Structure of Atoms

Review the Videos at Thinkwell Video Lessons.

  • Under "MODERN ATOMIC THEORY: Atomic Orbitals"
    • Atomic Orbital Size
    • Atomic Orbital Shapes and Quantum Numbers
    • Atomic Orbital Energy

Use the electron orbital quantum viewer to see how an electron's possible locations change as you change the quantum numbers. Note that at any point you can grab the display and change your viewpoint.

  • What are the quantum values for n and l on the default?
  • Change the n value to n = 1. What happens to the orbital? What shape is it now?
  • What values for l are available from the l dropdown menu? Why?
  • What orbital designations are available (1s, 2s, 2p, 3s, 3p, etc.)?
  • Change the n value to n = 2. What is the orbital shape now?
  • What shape do you have if n = 2 and l = 1? What happens if you change the designation to 2px or 2py?
  • Experiment with higher values of n, such as n=5.

Chat Preparation Activities

Chapter Quiz

Lab Work

LAB #4 GUIDED INQUIRY: Measuring reaction rates for photosensitive reactions -- Phase III

If you have time, refine and recalibrate your standards to give more accurate concentration estimates, and repeat your experiment.