IB skill practice

Compare lattice enthalpy and ionic radii

Syllabus-aligned Chemistry skill. Draft skills remain inactive until production seed coverage is added.

Paper 1, Paper 2 5 marks Difficulty 4

Compare lattice enthalpy from radius

Two ionic solids in a Auckland HL chemistry tutorial have the same ion charges, but the result has ion radius 80 pm and solid B has ion radius 106 pm. Which has the larger lattice enthalpy magnitude? Use the labelled diagram or spectrum before giving the answer. Enter the answer and choose the interpretation that matches the HL chemistry evidence.

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