Practice Shielding (Screening) Effect - 2.7.1 | Unit 2: Atomic Structure | IB Grade 11: Chemistry
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2.7.1 - Shielding (Screening) Effect

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define the shielding effect.

💡 Hint: Think about what happens when inner electrons are present.

Question 2

Easy

What is the formula for calculating effective nuclear charge?

💡 Hint: What do you subtract from the nuclear charge?

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

What does the shielding effect describe?

  • A decrease in nuclear charge felt by outer electrons due to inner electrons.
  • An increase in nuclear charge for all electrons.
  • The phenomenon of electron decay.

💡 Hint: Think about how electrons interact with the nucleus.

Question 2

True or False: The effective nuclear charge is always equal to the actual nuclear charge.

  • True
  • False

💡 Hint: Recall what shielding does to the charge measurement.

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Challenge Problems

Push your limits with challenges.

Question 1

Given an atom like calcium (Z = 20), apply Slater's rules to calculate the effective nuclear charge felt by a 4s electron. What implications can this have for its reactivity?

💡 Hint: Break down the shielding contributions systematically.

Question 2

Analyze the effect of shielding on ionization energy trends in the periodic table across periods and down groups for sodium and potassium.

💡 Hint: Reflect on how many inner electrons are present in sodium vs potassium.

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