Practice Trends Across a Period: Charge, Radius, and Reactivity - 4.2 | Unit 3: Periodicity | IB Grade 11: Chemistry
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4.2 - Trends Across a Period: Charge, Radius, and Reactivity

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What happens to atomic radius as you move from left to right across a period?

πŸ’‘ Hint: Think about the effect of more protons on the pull of the nucleus.

Question 2

Easy

What is the trend in reactivity for metals across a period?

πŸ’‘ Hint: Consider how easily metals can lose electrons.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

How does effective nuclear charge affect atomic radius?

  • Increases atomic radius
  • Decreases atomic radius
  • No effect

πŸ’‘ Hint: Think about what happens as more protons are added.

Question 2

True or False: Reactivity of metals increases across a period.

  • True
  • False

πŸ’‘ Hint: Consider the trends in electron loss.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Predict the trends of melting and boiling points as you move from Li to Ne. Provide rationale based on bonding type.

πŸ’‘ Hint: Consider how the type of bonding influences temperature thresholds for states of matter.

Question 2

Using effective nuclear charge, discuss why Cl has a higher electronegativity than Na.

πŸ’‘ Hint: Think about how proton-to-electron ratios impact electron attraction.

Challenge and get performance evaluation