ConceptConceptDocsDocuments

Pearson Edexcel IAL Chemistry 3.15 Polar bonds & polar molecules

Practise deciding whether molecules are polar by combining bond polarity, molecular shape, symmetry and experimental behaviour.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • predict molecular polarity from shape and symmetry in species
  • distinguish polar bonds from a permanent molecular dipole when dipoles cancel
  • use liquid-deflection or intermolecular-force evidence to identify polar and non-polar molecules

3.16—The principles of the electron-pair repulsion theory, used to interpret and predict the shapes of simple molecules and ions question 1

[Maximum number: 1]

Chlorine dioxide, ClO2\mathrm{ClO}_{2}, can be used to treat water to make it safe for drinking. The molecule is a free radical. One suggested structure is shown.

Figure for Question 3.16—The principles of the electron-pair repulsion theory, used to interpret and predict the shapes of simple molecules and ions question 1 — Edexcel A-Level Chemistry AS

Give the reason why chlorine dioxide is not a linear molecule.

All question bank results loaded