What counts as a transition element?
What counts as a transition element?
The d-block contains elements where electrons are being added to d subshells. A transition element is stricter: it must form at least one stable ion with a partially filled d subshell.
Step-by-step lessons covering Edexcel A Level Chemistry Transition metal principles for A Level Chemistry. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.