Practice Atomic And Ionic Sizes (2.1) - Chapter 8: The d- and f-Block Elements

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6 sample questions

Question 1.
Describe the trend in atomic size across a period.
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Think of the number of protons and their pull on electrons.
Question 2.
What is lanthanide contraction?
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Consider how the f-orbitals affect size.
3Question 3.
What happens to atomic radius across a period?
- Increases
- Decreases
- Stays the same
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Remember the trend for periodic atomic radii.
4Question 4.
True or False: Ionic sizes of anions are always smaller than their parent atoms.
- True
- False
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Think about electron relationships when gaining electrons.
Question 5.
Determine and compare the atomic size of elements Scandium (Sc) and Copper (Cu). What factors contribute to the differences you observe?
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Consider their positions in the periodic table.
Question 6.
In a group of d-block elements, why does Gold (Au) have a smaller atomic radius compared to Silver (Ag) despite being below it in the periodic table?
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Examine lattice structure in d-block elements to help understand.

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