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2.3 Ionic bonding
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Ions form by electron transfer

Ions form by electron transfer

An ion is an atom or group of atoms with an overall charge because it has lost or gained electrons. An atom is neutral when it has equal numbers of protons and electrons.

2.3 Ionic bonding Lesson

  1. GCSE
  2. /Chemistry
  3. /2.3 Ionic bonding

Step-by-step lessons on Edexcel GCSE Chemistry 2.3 Ionic bonding, covering 2.3.1 Ions and the formation of ionic bonds, 2.3.2 Naming and deducing formulae of ionic compounds, and 2.3.3 Giant ionic lattices. 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.

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