25.3 Complex Ions Ligand and complex A ligand is a molecule or ion with a lone pair of electrons, capable of forming a co-ordinate bond to a metal atom or ion. Some examples of ligands are water, ammonia and chloride ion A complex is a molecule or ion...
25.1 Introduction to Transition Elements Transition and d-block elements A transition element is one which forms one or more stable ions with incompletely filled orbitals A d-block element is one which has electrons filling the d-orbitals. From the above...
25.2 Oxidation States of Transition Elements Variable oxidation states One characteristic property of transition elements is that they have variable oxidation states. For example, iron can exist in 0, +2 or +3 oxidation state. This is because the 4s and 3d...
CHAPTER 25: Transition Elements Introduction to Transition Elements Oxidation States of Transition Elements Complex Ions Learning outcomes: explain what is meant by a transition element, in terms of d-block elements forming one or more stable ions with incomplete...