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2.3 The metallic model

Syllabus
First assessment 2025
Topic
2.3
Level
HL

Objective notes

3 learning objectives
2.3.1Metallic bonding

• Electrostatic attraction between cation lattice and delocalized electrons

• Properties: electrical/thermal conductivity, malleability

2.3.2Bond strength

• Depends on ion charge and metal ion radius

• Trends in melting points (s and p block metals)

2.3.3(HL)—Transition elements

• Delocalized d-electrons

• High melting points, electrical conductivity

ConceptIB Chemistry HL