IB Chemistry SL 2.4.2 Bonding Triangle

Practise locating a substance on the bonding triangle using electronegativity difference and average electronegativity. Interpret the position as relative ionic, covalent and…

Syllabus
First assessment 2025
Objective
2.4.2
Level
SL

Exam points

  • calculate electronegativity difference and average before classifying the bonding
  • read a bonding-triangle position to estimate ionic, covalent or metallic character
  • use the predicted bonding contribution to justify conductivity or another property

2.4.2—Bonding triangle question 1

[Maximum number: 1]

Iron(II) sulfide can be produced by heating powdered iron and sulfur together.

Outline why solid iron(II) sulfide is a polar covalent compound. Use sections 9 and 17 of the data booklet.

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