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IB Chemistry HL 2.3 The Metallic Model Questions

Practise IB Chemistry HL 2.3 with evidence-led questions on water, atmospheric systems and environmental chemistry.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Explain metallic bonding using delocalized electrons and a positive-ion lattice, then relate it to conductivity and malleability.
  • Compare metallic bond strength using ion charge, radius and charge density, evaluating trends against melting-point evidence.
  • Explain how transition-element metallic bonding and d-electron participation affect physical properties such as melting point.

Covered syllabus points

2.3.1—Metallic bonding2.3.2—Bond strength2.3.3 (HL)—Transition elements

Learn this topic

Study 2.3 The metallic model conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

Question 1

[Maximum number: 3]

Titanium and vanadium are consecutive elements in the first transition metal series.

Question (a)

(a)

Describe the bonding in metals.

[ 2 ]

Question (b)

(b)

Suggest why the melting point of vanadium is higher than that of titanium.

[ 1 ]

Question 2

[Maximum number: 3]

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

Question (a)

(a)

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

[ 3 ]

Question (i)

(i)

Describe the bonding present in magnesium metal.

[ 2 ]

Question (ii)

(ii)

Suggest why magnesium is harder than sodium.

[ 1 ]
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