Practice Key Concepts and Plain-Language Formulas - 9 | Unit 2: Atomic Structure | IB Grade 11: Chemistry
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9 - Key Concepts and Plain-Language Formulas

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is Planck's constant?

💡 Hint: Look for a relationship involving energy and frequency.

Question 2

Easy

State the Rydberg formula.

💡 Hint: Think about transitions between energy levels.

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 is the formula for calculating the energy levels of electrons in hydrogen?

💡 Hint: Consider the terms for energy and their relationship to atomic structure.

Question 2

True or False: The energy of a photon is inversely proportional to its wavelength.

  • True
  • False

💡 Hint: Think about the relationship between energy, frequency, and wavelength.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Using the Rydberg formula, calculate the wavelength of light emitted when an electron in a hydrogen atom transitions from n=5 to n=3. Use R_H = 1.0968 x 10^7/m.

💡 Hint: Make sure to calculate the transition values before plugging them into the formula.

Question 2

Explain how the calculated energy level changes with an increase in the atomic number Z for hydrogen-like atoms. Illustrate this with the energy equation.

💡 Hint: Focus on how increased nuclear charge affects electron binding energy.

Challenge and get performance evaluation