Practice HL: Photoelectron Spectroscopy (PES) - 2.5 | Chapter 2: Atomic Structure & Periodicity | IB Grade 12-Chemistry
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2.5 - HL: Photoelectron Spectroscopy (PES)

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does PES stand for?

💡 Hint: Think about what the technique is analyzing.

Question 2

Easy

What are the two main types of photon sources used in PES?

💡 Hint: Recall the types of radiation that can eject 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

What principle does Photoelectron Spectroscopy rely on?

  • Quantum entanglement
  • Photoelectric effect
  • Nuclear magnetic resonance

💡 Hint: Recall Einstein's contribution to physics regarding light and electrons.

Question 2

In a PES spectrum, which electrons are represented by the peaks furthest to the left?

  • Valence electrons
  • Core electrons
  • Outer shell electrons

💡 Hint: Think about which electrons are closest to the nucleus.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A sample of a gas results in a PES spectrum with two distinct peaks, one at 10 eV and another at 25 eV binding energy. Identify the likely electron subshells responsible for each peak and describe any implications for the atomic structure.

💡 Hint: Think about which electrons are typically found further from the nucleus.

Question 2

If the photon energy used in PES is 40 eV and the kinetic energy of a certain emitted electron is 10 eV, what is the binding energy of that electron?

💡 Hint: Apply the PES equation E_photon = BE + KE.

Challenge and get performance evaluation