What defines a transition metal?
What defines a transition metal?
A ddd sub-level contains five orbitals and can hold up to 10 electrons. In this A-level topic, the key Period 4 elements are Ti to Cu because they show the characteristic chemistry of transition metals.
Step-by-step lessons on AQA A Level Chemistry General properties of transition metals (A-level only). Each one builds up to exam-style questions. 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.