Practice Summary (3.8) - Classification of Elements and Periodicity in Properties

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8 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the atomic number represent?
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Look at the elements' arrangements in the Periodic Table.
Question 2.
How do you explain the trend of atomic radius in the Periodic Table?
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Consider the effect of the nucleus on electrons.
3Question 3.
What indicates that two elements will have similar chemical properties?
- Their atomic mass
- Their atomic number
- Their placement in the same group
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Think about how electrons influence reactivity.
4Question 4.
True or False: The atomic radius increases across a period.
- True
- False
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Reflect on how nuclear charge affects atomic size.
Question 5.
Analyze the link between reactivity patterns in the Periodic Table and electron configurations.
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Focus on how electron arrangement influences behavior.
Question 6.
Discuss how predicting properties of newly discovered elements utilizes the existing trends in the Periodic Table.
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Reflect on Mendeleev's predictions regarding gaps in his table.

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