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IB Chemistry HL 2.3.2 Bond Strength Questions

Use exam questions to compare metallic-bond strength from delocalized electrons, cation charge and radius, and justify property trends.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Rank metals by metallic-bond strength using delocalized-electron count, cation charge and atomic radius.
  • Explain why greater charge density or more delocalized electrons strengthens metallic bonding.
  • Use hardness, density or comparative melting-point trends as evidence for a metallic-bond-strength ranking.

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Study 2.3.2—Bond strength conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 2.3.2 Bond Strength Questions question 1

[Maximum number: 1]

Magnesium, a reactive metal found in many common minerals, is also an essential nutrient for both plants and animals.

Magnesium metal is mainly used as a component in lightweight alloys, particularly in combination with aluminium and titanium.

Suggest why magnesium is harder than sodium.

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