Atomic Radius Worksheet
Explore the factors affecting atomic radius and periodic trends in this Grade 10 chemistry worksheet.
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Atomic Radius Exploration
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Read each question carefully and provide concise answers based on your knowledge of atomic radius and periodic trends.
1. Which of the following best defines atomic radius?
The distance from the nucleus to the outermost electron shell.
The total number of electrons in an atom.
The mass of the atomic nucleus.
The energy required to remove an electron.
2. As you move across a period from left to right on the periodic table, what generally happens to atomic radius?
It increases.
It decreases.
It remains constant.
It fluctuates unpredictably.
3. The primary factor causing atomic radius to decrease across a period is the increasing charge.
4. As you move down a group on the periodic table, the atomic radius generally due to the addition of new electron shells.
5. Explain the concept of 'shielding effect' and how it influences atomic radius.
6. Compare the atomic radius of Sodium (Na) and Chlorine (Cl). Justify your answer based on periodic trends.
7. Atomic radius is typically measured in angstroms (Å) or picometers (pm).
True
False
8. Cations are generally larger than their parent atoms because they have lost electrons.
True
False
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