S2.2 The covalent model (2)
This is the second part of S2.2 The covalent model 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 only covered in the Additional Higher Level material under S2.2. Once the shape of a molecule is known its overall polarity can be deduced. What determines the covalent nature...