Electron Configurations and Quantum Numbers
Grade 11th Grade · Chemistry · 80 min
What's Included
Learning Objective
I can determine the electron configuration of an element using quantum numbers and the Aufbau principle.
Warm-Up Video
Professor Dave Explains · 8:42
Quantum Numbers, Atomic Orbitals, and Electron Configurations
Guided Notes
3 key concepts
- 1
The four quantum numbers that describe different atomic orbitals are the principal quantum number (n), the angular momentum quantum number (l), the magnetic quantum number (m sub l), and the spin quantum number (m sub s).
- 2
The Aufbau principle tells us the order in which an atom will fill up its orbitals, and Hund's rule says that for electrons of the same energy, you put one electron in each orbital first before doubling them up.
- 3
Atoms with unpaired electrons in their orbital diagrams are called paramagnetic and are attracted by a magnetic field, while atoms with all of their electrons paired are diamagnetic and are not affected by a magnetic field.
Practice Questions
12 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“What is the electron configuration of oxygen? Show how you arrived at your answer using the Aufbau principle.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
