Practice Ionic Sizes (4.6.2) - The d– and f-Block Elements

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6 sample questions

Question 1.
What happens to the ionic sizes of lanthanides as you move from La to Lu?
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Think about the nuclear charge affecting the ionic size.
Question 2.
Define lanthanoid contraction.
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It involves changes in sizes across a group.
3Question 3.
What phenomenon describes the decrease in ionic sizes of lanthanides?
- Ionic Expansion
- Lanthanoid Contraction
- Ionic Shielding
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It starts with the letter 'L' and involves size changes.
4Question 4.
True or False: Actinoid contraction is less significant than lanthanoid contraction.
- True
- False
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Consider the effects of electron shielding.
Question 5.
Given the ionic radii of La3+ and Lu3+, explain the chemical similarities and differences in their reactivity and bonding.
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Consider how size affects coordination in bonding scenarios.
Question 6.
How might the similarities in ionic sizes between Zr and Hf lead to complications in their separation in industry?
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Think about the strategies used in separation based on unique ionic characteristics.

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