Electronegativity and Ionization Energy Trends
Grade 11th Grade · Science · 43 min
What's Included
Learning Objective
I can explain how electronegativity and ionization energy change across periods and groups in the periodic table.
Warm-Up Video
Khan Academy · 10:43
Periodic trends and Coulomb's law | Atomic structure and properties | AP Chemistry | Khan Academy
Guided Notes
3 key concepts
- 1
Coulomb's law states that the magnitude of the force between two charged particles is proportional to the charge on each particle and inversely proportional to the square of the distance between them.
- 2
Effective nuclear charge (Zeff) is the net positive charge experienced by valence electrons in an atom and can be approximated by subtracting the number of core electrons from the atomic number.
- 3
Ionization energy generally increases across a period (from left to right) and decreases down a group, while atomic radius generally decreases across a period and increases down a group.
Practice Questions
6 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“Explain how electronegativity changes as you move from left to right across a period and from top to bottom down a group in the periodic table. Relate this trend to Coulomb's Law.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
