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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is atomic radius?
💡 Hint: Consider what defines the size of an atom.
Question 2
Easy
Define lanthanoid contraction.
💡 Hint: Think about how nuclear charge affects size.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is lanthanoid contraction?
- A decrease in ionic radii across lanthanides
- An increase in atomic mass
- A stable atomic structure across all lanthanides
💡 Hint: Think about what happens to size as you move across the series.
Question 2
True or False: Ionic sizes increase as you go from lanthanum to lutetium.
- True
- False
💡 Hint: Recall the trend of decreasing sizes in the lanthanide series.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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.
Question 2
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.
Challenge and get performance evaluation