ocr chemistry - module 3 - transition elements OCR salters module 3 1.5 / 5 based on 3 ratings ? ChemistryTransition metalsA2/A-levelOCR Created by: MeganCreated on: 31-01-12 20:45 Transition metals Transition element - a d-block element that forms an ion with an incomplete d sub-shell Remember: 4S subshell has a lower energy than the 3d sub-shell so it fills first. 1 of 2 Ligand substition reactions Ligand substition - a reaction in which one ligand in a complex ion is replaced by another ligand. aqueous copper(II) 2 of 2
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