4.5.2 - Atomic and Ionic Sizes
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is atomic radius?
💡 Hint: Consider what defines the size of an atom.
Define lanthanoid contraction.
💡 Hint: Think about how nuclear charge affects size.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is lanthanoid contraction?
💡 Hint: Think about what happens to size as you move across the series.
True or False: Ionic sizes increase as you go from lanthanum to lutetium.
💡 Hint: Recall the trend of decreasing sizes in the lanthanide series.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
Given the ionic radii of cerium (IV) and lutetium (III), analyze the differences in their reactivity based on ionic size.
💡 Hint: Factor in how charge density influences ion interactions.
Explore the impact of lanthanoid contraction when comparing the separation of gadolinium and dysprosium during industrial processes.
💡 Hint: Consider methods that exploit subtle reactivity differences in close-sized elements.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.