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IB Chemistry HL 2.2.15 Hl Sigma and Pi Bonds Questions

Distinguish axial σ overlap from lateral p-orbital π overlap, count σ and π components in single, double and triple bonds, and relate hybrid orbitals to multiple-bond formation.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Distinguish end-on/head-on orbital overlap along the internuclear axis for a σ bond from side-on p-orbital overlap for a π bond.
  • Count σ and π components in single, double and triple bonds and apply the count to displayed molecular structures.
  • Relate hybrid orbitals and unhybridized p orbitals to multiple-bond formation in alkenes, alkynes and nitrile-containing molecules.

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Study 2.2.15 (HL)—Sigma (σ) and pi (π) bonds conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 2.2.15 Hl Sigma and Pi Bonds Questions question 1

[Maximum number: 2]

Describe the formation of σ\sigma and π\pi bonds in an alkene.

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