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Learning objective

Describe trends in electronegativity and boiling point down Group 7.

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Topic

Group 7(17), the halogens

Subtopic

Halogen trends and displacement

Aqa A Level ChemistryInorganic chemistry

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Quick explanation

Describe trends in electronegativity and boiling point down Group 7

  • This point belongs to Group 7(17), the halogens, especially Halogen trends and displacement.
  • You need to be able to describe trends in electronegativity and boiling point down Group 7.
  • The key ideas to know are electronegativity.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

electronegativity

Why it matters

This objective helps connect Halogen trends and displacement to exam-style questions, flashcards, and revision notes for Group 7(17), the halogens.

Quick student answer

Which of the following halogens has the highest electronegativity?

Direct answer

Fluorine has the highest electronegativity among the halogens.

Key terms

  • Electronegativity: The ability of an atom to attract electrons in a chemical bond.
  • Boiling Point: The temperature at which a liquid's vapor pressure equals the external pressure surrounding the liquid.

Common trap

Confusing trends in electronegativity and boiling point: Remember that electronegativity decreases down Group 7 due to increased atomic size and shielding.

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