Edexcel A-Level Chemistry AS 3.16 The Principles of the Electron Pair Repulsion Theory Used to Interpret and Predict the Shapes of Simple Molecules and Ions Questions

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

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

[Maximum number: 1]

Chlorine dioxide, $\mathrm{ClO}_{2}$ , 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 Edexcel A-Level Chemistry AS 3.16 The Principles of the Electron Pair Repulsion Theory Used to Interpret and Predict the Shapes of Simple Molecules and Ions Questions question 1 — Edexcel A-Level Chemistry AS

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

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Edexcel A-Level Chemistry AS 3.16 The Principles of the Electron Pair Repulsion Theory Used to Interpret and Predict the Shapes of Simple Molecules and Ions Questions question 1