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7.2.1 Physical properties of the halogens
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Colours and states at room temperature

Colours and states at room temperature

A halogen is an element in Group 7 with seven electrons in its outer shell. Halogens exist as diatomic molecules, including Cl2\text{Cl}_2Cl2​, Br2\text{Br}_2Br2​ and I2\text{I}_2I2​.

7.2.1 Physical properties of the halogens Lesson

  1. GCSE
  2. /Chemistry
  3. /7.2.1 Physical properties of the halogens

Step-by-step lessons on Edexcel GCSE Chemistry 7.2.1 Physical properties of the halogens. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons