This is the second part of 4.3 Covalent structures and looks at VSEPR theory to determine the shapes of simple molecules and ions. Since the underlying theory is the same it also includes 5 and 6 electrons pairs around the central atom which is on the Higher Level programme under 14.1.Part of sub-topic 4.3 is to predict the bond angles in species with two, three and four electrons domains. The classic example used for...