4.6.2 - Ionic Sizes
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Practice Questions
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What happens to the ionic sizes of lanthanides as you move from La to Lu?
💡 Hint: Think about the nuclear charge affecting the ionic size.
Define lanthanoid contraction.
💡 Hint: It involves changes in sizes across a group.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What phenomenon describes the decrease in ionic sizes of lanthanides?
💡 Hint: It starts with the letter 'L' and involves size changes.
True or False: Actinoid contraction is less significant than lanthanoid contraction.
💡 Hint: Consider the effects of electron shielding.
1 more question available
Challenge Problems
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Given the ionic radii of La3+ and Lu3+, explain the chemical similarities and differences in their reactivity and bonding.
💡 Hint: Consider how size affects coordination in bonding scenarios.
How might the similarities in ionic sizes between Zr and Hf lead to complications in their separation in industry?
💡 Hint: Think about the strategies used in separation based on unique ionic characteristics.
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