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Outer electrons control reactivity

Outer electrons control reactivity

Chemical reactions involve an atom's outer electrons. These electrons may be lost, gained or shared, so the number of outer electrons helps predict how an element reacts.

2.2.4 Reactivity, atomic number and the modern Periodic Table Lesson

  1. GCSE
  2. /Chemistry
  3. /2.2.4 Reactivity, atomic number and the modern Periodic Table

Step-by-step lessons on OCR GCSE Chemistry 2.2.4 Reactivity, atomic number and the modern Periodic Table. 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