Skip to content

Course home

Sign up

Bonding

EasyMediumHard
123
Question 2

The boiling point of XeF4\text{XeF}_4XeF4​ (which sublimes at 117 °C) is significantly higher than the boiling point of SF4\text{SF}_4SF4​ (-38 °C).

Explain why these two compounds have different boiling points.

In your answer you should:

  • State the shape of each molecule and explain why each molecule has that shape.
  • Explain how the shape of each molecule influences its polarity and the type(s) of intermolecular forces present.
  • Explain why the boiling point of XeF4\text{XeF}_4XeF4​ is higher despite any differences in intermolecular force types.
\text{}
[6]
Markscheme

Bonding Questions

  1. A Level
  2. /Chemistry
  3. /Bonding

54 exam-style questions on AQA A Level Chemistry Bonding, covering Ionic bonding, Nature of covalent and dative covalent bonds, Metallic bonding, Bonding and physical properties, Shapes of simple molecules and ions, Bond polarity, and Forces between molecules. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank